finding(plugin-charts): an all-boolean scatter coordinate draws nothing and says nothing — deliberately left unguarded by objectui#7171, because whether a boolean plots depends on its neighbours #7195

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Open
finding(plugin-charts): an all-boolean scatter coordinate draws nothing and says nothing — deliberately left unguarded by objectui#7171, because whether a boolean plots depends on its neighbours#7195
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finding

Description

@os-warren
os-warren
opened on Sep 1, 2026

Measured while implementing objectui#7171 (PR to follow). Recorded rather than fixed there, with the reasoning below — the residual hole is real, and its answer is almost certainly not in the renderer.

The two readings

packages/plugin-charts/src/AdvancedChartImpl.tsx, scatter arm. Both axes are type="number".

datasetmarks drawn
[{xm: true, ym: 40}, {xm: false, ym: 25}] — every x boolean0 of 2
[{xm: 10, ym: 40}, {xm: true, ym: 25}, {xm: false, ym: 60}] — one real number among them3 of 3

Recharts needs one genuinely numeric value to build the scale, and then coerces the booleans onto it. So whether a boolean coordinate plots is a property of the OTHER rows, not of the value.

Why objectui#7171 does not guard it

That card ships no-plottable-points / unplotted-points on an authoring-side predicate. Rejecting booleans was in the first draft — the all-boolean tile had been measured drawing 0 of 2 marks in the browser sweep and looked like a sibling of null. Pinning it turned the mixed case RED, which is how the second reading above was found.

Rejecting booleans would give the all-boolean tile a correct refusal, and give the mixed tile a footnote reading "2 of 3 rows ... are not drawn" over three points visibly on screen. A false sentence about the picture is worse than the silence, by the same reasoning that decided the copy in objectui#7146 and objectui#7147, so the predicate accepts booleans and the all-boolean case stays exactly as silent as it is today. Not a regression — a narrow hole that predates the card.

Where the answer probably belongs

Upstream, at authoring time: a boolean column bound to a numeric measure is a metadata error, and refusing it where the binding is declared is both earlier and more specific than anything the renderer can say. That makes this a spec/authoring question rather than a chart one, which is why it is filed separately rather than ridden on the renderer PR.

Scope

Narrow. It needs a boolean column bound to a scatter axis and EVERY row boolean. No dataset in the sweep produced it accidentally.

Related

objectui#7171 (the sweep) · objectui#7147 / PR objectui#7169 · objectui#7146.

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      , 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Add copy buttons to all 
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}
} catch(__e) { console.warn('[Userscript:Add Copy Buttons to Code Blocks]', __e); }
})();
(function(){
try {
var __m = "github.com";
var __re = new RegExp('^' + "github\\.com" + '

      Skip to content
      finding(plugin-charts): an all-boolean scatter coordinate draws nothing and says nothing — deliberately left unguarded by objectui#7171, because whether a boolean plots depends on its neighbours #7195
      Open
      Open
      finding(plugin-charts): an all-boolean scatter coordinate draws nothing and says nothing — deliberately left unguarded by objectui#7171, because whether a boolean plots depends on its neighbours#7195
      Labels
      finding
      Description
      @os-warren
      os-warren
      opened on Sep 1, 2026
      Measured while implementing objectui#7171 (PR to follow). Recorded rather than fixed there, with the reasoning below — the residual hole is real, and its answer is almost certainly not in the renderer.
      The two readings
      packages/plugin-charts/src/AdvancedChartImpl.tsx, scatter arm. Both axes are type="number".
      datasetmarks drawn
      [{xm: true, ym: 40}, {xm: false, ym: 25}] — every x boolean0 of 2
      [{xm: 10, ym: 40}, {xm: true, ym: 25}, {xm: false, ym: 60}] — one real number among them3 of 3
      Recharts needs one genuinely numeric value to build the scale, and then coerces the booleans onto it. So whether a boolean coordinate plots is a property of the OTHER rows, not of the value.
      Why objectui#7171 does not guard it
      That card ships no-plottable-points / unplotted-points on an authoring-side predicate. Rejecting booleans was in the first draft — the all-boolean tile had been measured drawing 0 of 2 marks in the browser sweep and looked like a sibling of null. Pinning it turned the mixed case RED, which is how the second reading above was found.
      Rejecting booleans would give the all-boolean tile a correct refusal, and give the mixed tile a footnote reading "2 of 3 rows ... are not drawn" over three points visibly on screen. A false sentence about the picture is worse than the silence, by the same reasoning that decided the copy in objectui#7146 and objectui#7147, so the predicate accepts booleans and the all-boolean case stays exactly as silent as it is today. Not a regression — a narrow hole that predates the card.
      Where the answer probably belongs
      Upstream, at authoring time: a boolean column bound to a numeric measure is a metadata error, and refusing it where the binding is declared is both earlier and more specific than anything the renderer can say. That makes this a spec/authoring question rather than a chart one, which is why it is filed separately rather than ridden on the renderer PR.
      Scope
      Narrow. It needs a boolean column bound to a scatter axis and EVERY row boolean. No dataset in the sweep produced it accidentally.
      Related
      objectui#7171 (the sweep) · objectui#7147 / PR objectui#7169 · objectui#7146.
      Metadata
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      No one assigned
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        finding
        Type
        No type
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        No projects
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          No milestone
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          None yet
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          No branches or pull requests
          Issue actions
          
, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Force GitHub README to respect dark mode\n(function() {\n var style = document.createElement('style');\n style.textContent = '\n .markdown-body {\n color-scheme: dark light;\n }\n .markdown-body pre { background: #161b22 !important; }\n .markdown-body code { background: rgba(110, 118, 129, 0.4) !important; }\n .markdown-body table th, .markdown-body table td { border-color: #30363d !important; }\n .markdown-body img { background: #0d1117; }\n .markdown-body blockquote { border-left-color: #8b949e; }\n .markdown-body hr { border-color: #30363d; }\n ';\n document.head.appendChild(style);\n})();", "GitHub Dark Mode README Fix");
}
} catch(__e) { console.warn('[Userscript:GitHub Dark Mode README Fix]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

          Skip to content
          finding(plugin-charts): an all-boolean scatter coordinate draws nothing and says nothing — deliberately left unguarded by objectui#7171, because whether a boolean plots depends on its neighbours #7195
          Open
          Open
          finding(plugin-charts): an all-boolean scatter coordinate draws nothing and says nothing — deliberately left unguarded by objectui#7171, because whether a boolean plots depends on its neighbours#7195
          Labels
          finding
          Description
          @os-warren
          os-warren
          opened on Sep 1, 2026
          Measured while implementing objectui#7171 (PR to follow). Recorded rather than fixed there, with the reasoning below — the residual hole is real, and its answer is almost certainly not in the renderer.
          The two readings
          packages/plugin-charts/src/AdvancedChartImpl.tsx, scatter arm. Both axes are type="number".
          datasetmarks drawn
          [{xm: true, ym: 40}, {xm: false, ym: 25}] — every x boolean0 of 2
          [{xm: 10, ym: 40}, {xm: true, ym: 25}, {xm: false, ym: 60}] — one real number among them3 of 3
          Recharts needs one genuinely numeric value to build the scale, and then coerces the booleans onto it. So whether a boolean coordinate plots is a property of the OTHER rows, not of the value.
          Why objectui#7171 does not guard it
          That card ships no-plottable-points / unplotted-points on an authoring-side predicate. Rejecting booleans was in the first draft — the all-boolean tile had been measured drawing 0 of 2 marks in the browser sweep and looked like a sibling of null. Pinning it turned the mixed case RED, which is how the second reading above was found.
          Rejecting booleans would give the all-boolean tile a correct refusal, and give the mixed tile a footnote reading "2 of 3 rows ... are not drawn" over three points visibly on screen. A false sentence about the picture is worse than the silence, by the same reasoning that decided the copy in objectui#7146 and objectui#7147, so the predicate accepts booleans and the all-boolean case stays exactly as silent as it is today. Not a regression — a narrow hole that predates the card.
          Where the answer probably belongs
          Upstream, at authoring time: a boolean column bound to a numeric measure is a metadata error, and refusing it where the binding is declared is both earlier and more specific than anything the renderer can say. That makes this a spec/authoring question rather than a chart one, which is why it is filed separately rather than ridden on the renderer PR.
          Scope
          Narrow. It needs a boolean column bound to a scatter axis and EVERY row boolean. No dataset in the sweep produced it accidentally.
          Related
          objectui#7171 (the sweep) · objectui#7147 / PR objectui#7169 · objectui#7146.
          Metadata
          Metadata
          Assignees
          No one assigned
            Labels
            finding
            Type
            No type
            Projects
            No projects
              Milestone
              No milestone
              Relationships
              None yet
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              No branches or pull requests
              Issue actions
              
, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Highlight search terms from Google/DuckDuckGo/Bing referrer\n(function() {\n var ref = document.referrer;\n var terms = [];\n \n if (ref.includes('google.com') || ref.includes('duckduckgo.com') || ref.includes('bing.com')) {\n var url = new URL(ref);\n var q = url.searchParams.get('q') || url.searchParams.get('p');\n if (q) {\n terms = q.split(/\\s+/).filter(function(t) { return t.length > 2; });\n }\n }\n \n if (terms.length === 0) return;\n \n var style = document.createElement('style');\n style.textContent = '.userscript-highlight { background: #fbbf24; color: #1a1a2e; padding: 1px 3px; border-radius: 2px; }';\n document.head.appendChild(style);\n \n function highlight(node) {\n if (node.nodeType === 3) { // text node\n var text = node.textContent;\n var found = false;\n terms.forEach(function(term) {\n var regex = new RegExp('(' + term.replace(/[.*+?^${}()|[\\]\\\\]/g, '\\\\') + ')', 'gi');\n if (regex.test(text)) {\n found = true;\n var frag = document.createDocumentFragment();\n var parts = text.split(regex);\n parts.forEach(function(part, i) {\n if (i % 2 === 0) {\n frag.appendChild(document.createTextNode(part));\n } else {\n var span = document.createElement('span');\n span.className = 'userscript-highlight';\n span.textContent = part;\n frag.appendChild(span);\n }\n });\n node.parentNode.replaceChild(frag, node);\n }\n });\n } else if (node.nodeType === 1 && node.childNodes) { // element\n var skipTags = ['SCRIPT', 'STYLE', 'NOSCRIPT', 'TEXTAREA', 'INPUT', 'SELECT'];\n if (!skipTags.includes(node.tagName)) {\n Array.from(node.childNodes).forEach(highlight);\n }\n }\n }\n \n highlight(document.body);\n \n // Re-highlight on dynamic content\n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1 || node.nodeType === 3) highlight(node);\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Highlight Search Terms");
}
} catch(__e) { console.warn('[Userscript:Highlight Search Terms]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

              Skip to content
              finding(plugin-charts): an all-boolean scatter coordinate draws nothing and says nothing — deliberately left unguarded by objectui#7171, because whether a boolean plots depends on its neighbours #7195
              Open
              Open
              finding(plugin-charts): an all-boolean scatter coordinate draws nothing and says nothing — deliberately left unguarded by objectui#7171, because whether a boolean plots depends on its neighbours#7195
              Labels
              finding
              Description
              @os-warren
              os-warren
              opened on Sep 1, 2026
              Measured while implementing objectui#7171 (PR to follow). Recorded rather than fixed there, with the reasoning below — the residual hole is real, and its answer is almost certainly not in the renderer.
              The two readings
              packages/plugin-charts/src/AdvancedChartImpl.tsx, scatter arm. Both axes are type="number".
              datasetmarks drawn
              [{xm: true, ym: 40}, {xm: false, ym: 25}] — every x boolean0 of 2
              [{xm: 10, ym: 40}, {xm: true, ym: 25}, {xm: false, ym: 60}] — one real number among them3 of 3
              Recharts needs one genuinely numeric value to build the scale, and then coerces the booleans onto it. So whether a boolean coordinate plots is a property of the OTHER rows, not of the value.
              Why objectui#7171 does not guard it
              That card ships no-plottable-points / unplotted-points on an authoring-side predicate. Rejecting booleans was in the first draft — the all-boolean tile had been measured drawing 0 of 2 marks in the browser sweep and looked like a sibling of null. Pinning it turned the mixed case RED, which is how the second reading above was found.
              Rejecting booleans would give the all-boolean tile a correct refusal, and give the mixed tile a footnote reading "2 of 3 rows ... are not drawn" over three points visibly on screen. A false sentence about the picture is worse than the silence, by the same reasoning that decided the copy in objectui#7146 and objectui#7147, so the predicate accepts booleans and the all-boolean case stays exactly as silent as it is today. Not a regression — a narrow hole that predates the card.
              Where the answer probably belongs
              Upstream, at authoring time: a boolean column bound to a numeric measure is a metadata error, and refusing it where the binding is declared is both earlier and more specific than anything the renderer can say. That makes this a spec/authoring question rather than a chart one, which is why it is filed separately rather than ridden on the renderer PR.
              Scope
              Narrow. It needs a boolean column bound to a scatter axis and EVERY row boolean. No dataset in the sweep produced it accidentally.
              Related
              objectui#7171 (the sweep) · objectui#7147 / PR objectui#7169 · objectui#7146.
              Metadata
              Metadata
              Assignees
              No one assigned
                Labels
                finding
                Type
                No type
                Projects
                No projects
                  Milestone
                  No milestone
                  Relationships
                  None yet
                  Development
                  No branches or pull requests
                  Issue actions
                  
, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Strip utm_, fbclid, gclid, etc. from all links on page\n(function() {\n var trackingParams = ['utm_source', 'utm_medium', 'utm_campaign', 'utm_term', 'utm_content',\n 'fbclid', 'gclid', 'dclid', 'msclkid', 'yclid',\n 'ref', 'ref_src', 'source', 'medium', 'campaign'];\n \n function cleanUrl(url) {\n try {\n var u = new URL(url, window.location.origin);\n var changed = false;\n trackingParams.forEach(function(p) {\n if (u.searchParams.has(p)) {\n u.searchParams.delete(p);\n changed = true;\n }\n });\n return changed ? u.toString() : url;\n } catch (e) {\n return url;\n }\n }\n \n function cleanLinks() {\n document.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n \n cleanLinks();\n \n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1) {\n if (node.tagName === 'A') cleanLinks();\n node.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Remove Tracking Parameters from Links");
}
} catch(__e) { console.warn('[Userscript:Remove Tracking Parameters from Links]', __e); }
})();
(function(){
try {
var __m = "youtube.com";
var __re = new RegExp('^' + "youtube\\.com" + '

                  Skip to content
                  finding(plugin-charts): an all-boolean scatter coordinate draws nothing and says nothing — deliberately left unguarded by objectui#7171, because whether a boolean plots depends on its neighbours #7195
                  Open
                  Open
                  finding(plugin-charts): an all-boolean scatter coordinate draws nothing and says nothing — deliberately left unguarded by objectui#7171, because whether a boolean plots depends on its neighbours#7195
                  Labels
                  finding
                  Description
                  @os-warren
                  os-warren
                  opened on Sep 1, 2026
                  Measured while implementing objectui#7171 (PR to follow). Recorded rather than fixed there, with the reasoning below — the residual hole is real, and its answer is almost certainly not in the renderer.
                  The two readings
                  packages/plugin-charts/src/AdvancedChartImpl.tsx, scatter arm. Both axes are type="number".
                  datasetmarks drawn
                  [{xm: true, ym: 40}, {xm: false, ym: 25}] — every x boolean0 of 2
                  [{xm: 10, ym: 40}, {xm: true, ym: 25}, {xm: false, ym: 60}] — one real number among them3 of 3
                  Recharts needs one genuinely numeric value to build the scale, and then coerces the booleans onto it. So whether a boolean coordinate plots is a property of the OTHER rows, not of the value.
                  Why objectui#7171 does not guard it
                  That card ships no-plottable-points / unplotted-points on an authoring-side predicate. Rejecting booleans was in the first draft — the all-boolean tile had been measured drawing 0 of 2 marks in the browser sweep and looked like a sibling of null. Pinning it turned the mixed case RED, which is how the second reading above was found.
                  Rejecting booleans would give the all-boolean tile a correct refusal, and give the mixed tile a footnote reading "2 of 3 rows ... are not drawn" over three points visibly on screen. A false sentence about the picture is worse than the silence, by the same reasoning that decided the copy in objectui#7146 and objectui#7147, so the predicate accepts booleans and the all-boolean case stays exactly as silent as it is today. Not a regression — a narrow hole that predates the card.
                  Where the answer probably belongs
                  Upstream, at authoring time: a boolean column bound to a numeric measure is a metadata error, and refusing it where the binding is declared is both earlier and more specific than anything the renderer can say. That makes this a spec/authoring question rather than a chart one, which is why it is filed separately rather than ridden on the renderer PR.
                  Scope
                  Narrow. It needs a boolean column bound to a scatter axis and EVERY row boolean. No dataset in the sweep produced it accidentally.
                  Related
                  objectui#7171 (the sweep) · objectui#7147 / PR objectui#7169 · objectui#7146.
                  Metadata
                  Metadata
                  Assignees
                  No one assigned
                    Labels
                    finding
                    Type
                    No type
                    Projects
                    No projects
                      Milestone
                      No milestone
                      Relationships
                      None yet
                      Development
                      No branches or pull requests
                      Issue actions
                      
, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Auto-enable theater mode on YouTube\n(function() {\n function tryTheater() {\n var btn = document.querySelector('button[aria-label=\"Theater mode\"], ytd-player #player button[title=\"Theater mode\"]');\n if (btn && !btn.classList.contains('activated')) {\n btn.click();\n }\n }\n \n // Try immediately\n tryTheater();\n \n // Try after navigation (SPA)\n var lastUrl = location.href;\n setInterval(function() {\n if (location.href !== lastUrl) {\n lastUrl = location.href;\n setTimeout(tryTheater, 500);\n }\n }, 1000);\n \n // Also try on player load\n var observer = new MutationObserver(tryTheater);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "YouTube Theater Mode Default");
}
} catch(__e) { console.warn('[Userscript:YouTube Theater Mode Default]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

                      Skip to content
                      finding(plugin-charts): an all-boolean scatter coordinate draws nothing and says nothing — deliberately left unguarded by objectui#7171, because whether a boolean plots depends on its neighbours #7195
                      Open
                      Open
                      finding(plugin-charts): an all-boolean scatter coordinate draws nothing and says nothing — deliberately left unguarded by objectui#7171, because whether a boolean plots depends on its neighbours#7195
                      Labels
                      finding
                      Description
                      @os-warren
                      os-warren
                      opened on Sep 1, 2026
                      Measured while implementing objectui#7171 (PR to follow). Recorded rather than fixed there, with the reasoning below — the residual hole is real, and its answer is almost certainly not in the renderer.
                      The two readings
                      packages/plugin-charts/src/AdvancedChartImpl.tsx, scatter arm. Both axes are type="number".
                      datasetmarks drawn
                      [{xm: true, ym: 40}, {xm: false, ym: 25}] — every x boolean0 of 2
                      [{xm: 10, ym: 40}, {xm: true, ym: 25}, {xm: false, ym: 60}] — one real number among them3 of 3
                      Recharts needs one genuinely numeric value to build the scale, and then coerces the booleans onto it. So whether a boolean coordinate plots is a property of the OTHER rows, not of the value.
                      Why objectui#7171 does not guard it
                      That card ships no-plottable-points / unplotted-points on an authoring-side predicate. Rejecting booleans was in the first draft — the all-boolean tile had been measured drawing 0 of 2 marks in the browser sweep and looked like a sibling of null. Pinning it turned the mixed case RED, which is how the second reading above was found.
                      Rejecting booleans would give the all-boolean tile a correct refusal, and give the mixed tile a footnote reading "2 of 3 rows ... are not drawn" over three points visibly on screen. A false sentence about the picture is worse than the silence, by the same reasoning that decided the copy in objectui#7146 and objectui#7147, so the predicate accepts booleans and the all-boolean case stays exactly as silent as it is today. Not a regression — a narrow hole that predates the card.
                      Where the answer probably belongs
                      Upstream, at authoring time: a boolean column bound to a numeric measure is a metadata error, and refusing it where the binding is declared is both earlier and more specific than anything the renderer can say. That makes this a spec/authoring question rather than a chart one, which is why it is filed separately rather than ridden on the renderer PR.
                      Scope
                      Narrow. It needs a boolean column bound to a scatter axis and EVERY row boolean. No dataset in the sweep produced it accidentally.
                      Related
                      objectui#7171 (the sweep) · objectui#7147 / PR objectui#7169 · objectui#7146.
                      Metadata
                      Metadata
                      Assignees
                      No one assigned
                        Labels
                        finding
                        Type
                        No type
                        Projects
                        No projects
                          Milestone
                          No milestone
                          Relationships
                          None yet
                          Development
                          No branches or pull requests
                          Issue actions
                          
, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Remove or un-stick sticky/fixed headers that block content\n(function() {\n function unstick() {\n document.querySelectorAll('header, nav, [role=\"banner\"], .header, .navbar, .sticky, .fixed-top, [style*=\"position: fixed\"], [style*=\"position:sticky\"]').forEach(function(el) {\n if (el.style.position === 'fixed' || el.style.position === 'sticky' || \n getComputedStyle(el).position === 'fixed' || getComputedStyle(el).position === 'sticky') {\n el.style.position = 'static';\n el.style.top = 'auto';\n el.style.zIndex = 'auto';\n }\n });\n }\n \n unstick();\n \n var observer = new MutationObserver(unstick);\n observer.observe(document.body, { childList: true, subtree: true, attributes: true, attributeFilter: ['style', 'class'] });\n})();", "Kill Sticky Headers");
}
} catch(__e) { console.warn('[Userscript:Kill Sticky Headers]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

                          Skip to content
                          finding(plugin-charts): an all-boolean scatter coordinate draws nothing and says nothing — deliberately left unguarded by objectui#7171, because whether a boolean plots depends on its neighbours #7195
                          Open
                          Open
                          finding(plugin-charts): an all-boolean scatter coordinate draws nothing and says nothing — deliberately left unguarded by objectui#7171, because whether a boolean plots depends on its neighbours#7195
                          Labels
                          finding
                          Description
                          @os-warren
                          os-warren
                          opened on Sep 1, 2026
                          Measured while implementing objectui#7171 (PR to follow). Recorded rather than fixed there, with the reasoning below — the residual hole is real, and its answer is almost certainly not in the renderer.
                          The two readings
                          packages/plugin-charts/src/AdvancedChartImpl.tsx, scatter arm. Both axes are type="number".
                          datasetmarks drawn
                          [{xm: true, ym: 40}, {xm: false, ym: 25}] — every x boolean0 of 2
                          [{xm: 10, ym: 40}, {xm: true, ym: 25}, {xm: false, ym: 60}] — one real number among them3 of 3
                          Recharts needs one genuinely numeric value to build the scale, and then coerces the booleans onto it. So whether a boolean coordinate plots is a property of the OTHER rows, not of the value.
                          Why objectui#7171 does not guard it
                          That card ships no-plottable-points / unplotted-points on an authoring-side predicate. Rejecting booleans was in the first draft — the all-boolean tile had been measured drawing 0 of 2 marks in the browser sweep and looked like a sibling of null. Pinning it turned the mixed case RED, which is how the second reading above was found.
                          Rejecting booleans would give the all-boolean tile a correct refusal, and give the mixed tile a footnote reading "2 of 3 rows ... are not drawn" over three points visibly on screen. A false sentence about the picture is worse than the silence, by the same reasoning that decided the copy in objectui#7146 and objectui#7147, so the predicate accepts booleans and the all-boolean case stays exactly as silent as it is today. Not a regression — a narrow hole that predates the card.
                          Where the answer probably belongs
                          Upstream, at authoring time: a boolean column bound to a numeric measure is a metadata error, and refusing it where the binding is declared is both earlier and more specific than anything the renderer can say. That makes this a spec/authoring question rather than a chart one, which is why it is filed separately rather than ridden on the renderer PR.
                          Scope
                          Narrow. It needs a boolean column bound to a scatter axis and EVERY row boolean. No dataset in the sweep produced it accidentally.
                          Related
                          objectui#7171 (the sweep) · objectui#7147 / PR objectui#7169 · objectui#7146.
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, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Universal Dark Mode - works on any site\n(function() {\n var enabled = true;\n \n function applyDarkMode() {\n if (!enabled) return;\n \n // Create style element if it doesn't exist\n var style = document.getElementById('universal-dark-mode-style');\n if (!style) {\n style = document.createElement('style');\n style.id = 'universal-dark-mode-style';\n document.head.appendChild(style);\n }\n \n // Dark mode CSS - inverts colors but preserves images/video\n style.textContent = '\n /* Invert everything except media */\n html {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #1a1a2e !important;\n }\n \n /* Restore images, videos, iframes, canvas */\n img, video, iframe, canvas, svg, picture, [style*=\"background-image\"] {\n filter: invert(1) hue-rotate(180deg) !important;\n }\n \n /* Preserve specific elements that should not be inverted */\n .no-dark-mode, .no-dark-mode *,\n [data-theme=\"light\"], [data-theme=\"light\"],\n .ace_editor, .ace_editor *,\n .CodeMirror, .CodeMirror *,\n .monaco-editor, .monaco-editor *,\n .markdown-body pre, .markdown-body pre *,\n .highlight, .highlight *,\n pre code, pre code * {\n filter: none !important;\n }\n \n /* Fix common UI elements */\n .modal, .popup, .dropdown-menu, .tooltip, .popover {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #2d2d44 !important;\n border-color: #444 !important;\n }\n \n /* Scrollbars */\n ::-webkit-scrollbar { background: #1a1a2e !important; }\n ::-webkit-scrollbar-thumb { background: #444 !important; }\n ::-webkit-scrollbar-thumb:hover { background: #555 !important; }\n \n /* Selection */\n ::selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ::-moz-selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ';\n }\n \n function removeDarkMode() {\n var style = document.getElementById('universal-dark-mode-style');\n if (style) style.remove();\n }\n \n // Toggle with Alt+Shift+D\n document.addEventListener('keydown', function(e) {\n if (e.altKey && e.shiftKey && e.key === 'D') {\n e.preventDefault();\n enabled = !enabled;\n if (enabled) {\n applyDarkMode();\n console.log('[Universal Dark Mode] Enabled');\n } else {\n removeDarkMode();\n console.log('[Universal Dark Mode] Disabled');\n }\n }\n });\n \n // Apply on load\n applyDarkMode();\n \n // Re-apply on dynamic content\n var observer = new MutationObserver(function(mutations) {\n if (enabled && !document.getElementById('universal-dark-mode-style')) {\n applyDarkMode();\n }\n });\n observer.observe(document.head, { childList: true });\n \n console.log('[Universal Dark Mode] Loaded - Press Alt+Shift+D to toggle');\n})();", "Universal Dark Mode");
}
} catch(__e) { console.warn('[Userscript:Universal Dark Mode]', __e); }
})();
})();

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                              finding(plugin-charts): an all-boolean scatter coordinate draws nothing and says nothing — deliberately left unguarded by objectui#7171, because whether a boolean plots depends on its neighbours #7195
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                              finding(plugin-charts): an all-boolean scatter coordinate draws nothing and says nothing — deliberately left unguarded by objectui#7171, because whether a boolean plots depends on its neighbours#7195
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                              finding
                              Description
                              @os-warren
                              os-warren
                              opened on Sep 1, 2026
                              Measured while implementing objectui#7171 (PR to follow). Recorded rather than fixed there, with the reasoning below — the residual hole is real, and its answer is almost certainly not in the renderer.
                              The two readings
                              packages/plugin-charts/src/AdvancedChartImpl.tsx, scatter arm. Both axes are type="number".
                              datasetmarks drawn
                              [{xm: true, ym: 40}, {xm: false, ym: 25}] — every x boolean0 of 2
                              [{xm: 10, ym: 40}, {xm: true, ym: 25}, {xm: false, ym: 60}] — one real number among them3 of 3
                              Recharts needs one genuinely numeric value to build the scale, and then coerces the booleans onto it. So whether a boolean coordinate plots is a property of the OTHER rows, not of the value.
                              Why objectui#7171 does not guard it
                              That card ships no-plottable-points / unplotted-points on an authoring-side predicate. Rejecting booleans was in the first draft — the all-boolean tile had been measured drawing 0 of 2 marks in the browser sweep and looked like a sibling of null. Pinning it turned the mixed case RED, which is how the second reading above was found.
                              Rejecting booleans would give the all-boolean tile a correct refusal, and give the mixed tile a footnote reading "2 of 3 rows ... are not drawn" over three points visibly on screen. A false sentence about the picture is worse than the silence, by the same reasoning that decided the copy in objectui#7146 and objectui#7147, so the predicate accepts booleans and the all-boolean case stays exactly as silent as it is today. Not a regression — a narrow hole that predates the card.
                              Where the answer probably belongs
                              Upstream, at authoring time: a boolean column bound to a numeric measure is a metadata error, and refusing it where the binding is declared is both earlier and more specific than anything the renderer can say. That makes this a spec/authoring question rather than a chart one, which is why it is filed separately rather than ridden on the renderer PR.
                              Scope
                              Narrow. It needs a boolean column bound to a scatter axis and EVERY row boolean. No dataset in the sweep produced it accidentally.
                              Related
                              objectui#7171 (the sweep) · objectui#7147 / PR objectui#7169 · objectui#7146.
                              Metadata
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                              No one assigned
                                Labels
                                finding
                                Type
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                                No projects
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                                  No milestone
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                                  None yet
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