[Bug] mouse wheel behaves unexpecedly, produces dead pop up window #5655

Open
#5660
Open
[Bug] mouse wheel behaves unexpecedly, produces dead pop up window#5655
#5660
Labels
bug

Description

@ddyer0
ddyer0
opened on Sep 1, 2026

Summary

I was looking at the profiles list and hit the mouse scroll wheel ( I expected to see more profiles than this)
unexpectedly, this window poped up. The entire interface froze this time. Other times the unexpected
window can be closed with the close button.

Image

Minimal reproducer

play with the mouse scroll wheel while looking at the profile pane

Steps to reproduce

try it

Expected and observed behavior

scroll wheel should scroll, not popup. Note that in this case there was nothing available
to scroll to - everything is already displayed.

Codename One version

current

JDK version

n/a

Target environment

eclipse

Last known working version

No response

Logs and diagnostics

Screenshots or recordings
No response
Report checks
  •  I searched existing issues and discussions for this behavior.
  •  The reproducer contains no credentials, signing keys, or private customer data.
  •  I understand that triage is not a commitment to a fix date.
Metadata
Metadata
Assignees
No one assigned
    Labels
    bug
    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("// Add copy buttons to all 
       blocks\n(function() {\n function addCopyButtons() {\n document.querySelectorAll('pre code').forEach(function(codeBlock) {\n if (codeBlock.parentElement.hasAttribute('data-copy-added')) return;\n codeBlock.parentElement.setAttribute('data-copy-added', 'true');\n \n var btn = document.createElement('button');\n btn.textContent = 'Copy';\n btn.style.cssText = 'position:absolute;top:4px;right:4px;padding:2px 8px;font-size:11px;background:#4ecdc4;border:none;border-radius:4px;color:#1a1a2e;cursor:pointer;opacity:0.7;transition:opacity 0.2s;';\n btn.onmouseover = function() { this.style.opacity = '1'; };\n btn.onmouseout = function() { this.style.opacity = '0.7'; };\n btn.onclick = function() {\n navigator.clipboard.writeText(codeBlock.textContent).then(function() {\n btn.textContent = 'Copied!';\n setTimeout(function() { btn.textContent = 'Copy'; }, 1500);\n });\n };\n codeBlock.parentElement.style.position = 'relative';\n codeBlock.parentElement.appendChild(btn);\n });\n }\n \n addCopyButtons();\n \n // Re-run on dynamic content\n var observer = new MutationObserver(addCopyButtons);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Add Copy Buttons to Code Blocks");
}
} 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
      [Bug] mouse wheel behaves unexpecedly, produces dead pop up window #5655
      Open
      #5660
      Open
      [Bug] mouse wheel behaves unexpecedly, produces dead pop up window#5655
      #5660
      Labels
      bug
      Description
      @ddyer0
      ddyer0
      opened on Sep 1, 2026
      Summary
      I was looking at the profiles list and hit the mouse scroll wheel ( I expected to see more profiles than this)
      
unexpectedly, this window poped up. The entire interface froze this time. Other times the unexpected
      
window can be closed with the close button.
      Image
      Minimal reproducer
      play with the mouse scroll wheel while looking at the profile pane
      Steps to reproduce
      try it
      Expected and observed behavior
      scroll wheel should scroll, not popup. Note that in this case there was nothing available
      
to scroll to - everything is already displayed.
      Codename One version
      current
      JDK version
      n/a
      Target environment
      eclipse
      Last known working version
      No response
      Logs and diagnostics
      Screenshots or recordings
      No response
      Report checks
      •  I searched existing issues and discussions for this behavior.
      •  The reproducer contains no credentials, signing keys, or private customer data.
      •  I understand that triage is not a commitment to a fix date.
      Metadata
      Metadata
      Assignees
      No one assigned
        Labels
        bug
        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("// 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
          [Bug] mouse wheel behaves unexpecedly, produces dead pop up window #5655
          Open
          #5660
          Open
          [Bug] mouse wheel behaves unexpecedly, produces dead pop up window#5655
          #5660
          Labels
          bug
          Description
          @ddyer0
          ddyer0
          opened on Sep 1, 2026
          Summary
          I was looking at the profiles list and hit the mouse scroll wheel ( I expected to see more profiles than this)
          
unexpectedly, this window poped up. The entire interface froze this time. Other times the unexpected
          
window can be closed with the close button.
          Image
          Minimal reproducer
          play with the mouse scroll wheel while looking at the profile pane
          Steps to reproduce
          try it
          Expected and observed behavior
          scroll wheel should scroll, not popup. Note that in this case there was nothing available
          
to scroll to - everything is already displayed.
          Codename One version
          current
          JDK version
          n/a
          Target environment
          eclipse
          Last known working version
          No response
          Logs and diagnostics
          Screenshots or recordings
          No response
          Report checks
          •  I searched existing issues and discussions for this behavior.
          •  The reproducer contains no credentials, signing keys, or private customer data.
          •  I understand that triage is not a commitment to a fix date.
          Metadata
          Metadata
          Assignees
          No one assigned
            Labels
            bug
            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("// 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
              [Bug] mouse wheel behaves unexpecedly, produces dead pop up window #5655
              Open
              #5660
              Open
              [Bug] mouse wheel behaves unexpecedly, produces dead pop up window#5655
              #5660
              Labels
              bug
              Description
              @ddyer0
              ddyer0
              opened on Sep 1, 2026
              Summary
              I was looking at the profiles list and hit the mouse scroll wheel ( I expected to see more profiles than this)
              
unexpectedly, this window poped up. The entire interface froze this time. Other times the unexpected
              
window can be closed with the close button.
              Image
              Minimal reproducer
              play with the mouse scroll wheel while looking at the profile pane
              Steps to reproduce
              try it
              Expected and observed behavior
              scroll wheel should scroll, not popup. Note that in this case there was nothing available
              
to scroll to - everything is already displayed.
              Codename One version
              current
              JDK version
              n/a
              Target environment
              eclipse
              Last known working version
              No response
              Logs and diagnostics
              Screenshots or recordings
              No response
              Report checks
              •  I searched existing issues and discussions for this behavior.
              •  The reproducer contains no credentials, signing keys, or private customer data.
              •  I understand that triage is not a commitment to a fix date.
              Metadata
              Metadata
              Assignees
              No one assigned
                Labels
                bug
                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
                  [Bug] mouse wheel behaves unexpecedly, produces dead pop up window #5655
                  Open
                  #5660
                  Open
                  [Bug] mouse wheel behaves unexpecedly, produces dead pop up window#5655
                  #5660
                  Labels
                  bug
                  Description
                  @ddyer0
                  ddyer0
                  opened on Sep 1, 2026
                  Summary
                  I was looking at the profiles list and hit the mouse scroll wheel ( I expected to see more profiles than this)
                  
unexpectedly, this window poped up. The entire interface froze this time. Other times the unexpected
                  
window can be closed with the close button.
                  Image
                  Minimal reproducer
                  play with the mouse scroll wheel while looking at the profile pane
                  Steps to reproduce
                  try it
                  Expected and observed behavior
                  scroll wheel should scroll, not popup. Note that in this case there was nothing available
                  
to scroll to - everything is already displayed.
                  Codename One version
                  current
                  JDK version
                  n/a
                  Target environment
                  eclipse
                  Last known working version
                  No response
                  Logs and diagnostics
                  Screenshots or recordings
                  No response
                  Report checks
                  •  I searched existing issues and discussions for this behavior.
                  •  The reproducer contains no credentials, signing keys, or private customer data.
                  •  I understand that triage is not a commitment to a fix date.
                  Metadata
                  Metadata
                  Assignees
                  No one assigned
                    Labels
                    bug
                    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
                      [Bug] mouse wheel behaves unexpecedly, produces dead pop up window #5655
                      Open
                      #5660
                      Open
                      [Bug] mouse wheel behaves unexpecedly, produces dead pop up window#5655
                      #5660
                      Labels
                      bug
                      Description
                      @ddyer0
                      ddyer0
                      opened on Sep 1, 2026
                      Summary
                      I was looking at the profiles list and hit the mouse scroll wheel ( I expected to see more profiles than this)
                      
unexpectedly, this window poped up. The entire interface froze this time. Other times the unexpected
                      
window can be closed with the close button.
                      Image
                      Minimal reproducer
                      play with the mouse scroll wheel while looking at the profile pane
                      Steps to reproduce
                      try it
                      Expected and observed behavior
                      scroll wheel should scroll, not popup. Note that in this case there was nothing available
                      
to scroll to - everything is already displayed.
                      Codename One version
                      current
                      JDK version
                      n/a
                      Target environment
                      eclipse
                      Last known working version
                      No response
                      Logs and diagnostics
                      Screenshots or recordings
                      No response
                      Report checks
                      •  I searched existing issues and discussions for this behavior.
                      •  The reproducer contains no credentials, signing keys, or private customer data.
                      •  I understand that triage is not a commitment to a fix date.
                      Metadata
                      Metadata
                      Assignees
                      No one assigned
                        Labels
                        bug
                        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
                          [Bug] mouse wheel behaves unexpecedly, produces dead pop up window #5655
                          Open
                          #5660
                          Open
                          [Bug] mouse wheel behaves unexpecedly, produces dead pop up window#5655
                          #5660
                          Labels
                          bug
                          Description
                          @ddyer0
                          ddyer0
                          opened on Sep 1, 2026
                          Summary
                          I was looking at the profiles list and hit the mouse scroll wheel ( I expected to see more profiles than this)
                          
unexpectedly, this window poped up. The entire interface froze this time. Other times the unexpected
                          
window can be closed with the close button.
                          Image
                          Minimal reproducer
                          play with the mouse scroll wheel while looking at the profile pane
                          Steps to reproduce
                          try it
                          Expected and observed behavior
                          scroll wheel should scroll, not popup. Note that in this case there was nothing available
                          
to scroll to - everything is already displayed.
                          Codename One version
                          current
                          JDK version
                          n/a
                          Target environment
                          eclipse
                          Last known working version
                          No response
                          Logs and diagnostics
                          Screenshots or recordings
                          No response
                          Report checks
                          •  I searched existing issues and discussions for this behavior.
                          •  The reproducer contains no credentials, signing keys, or private customer data.
                          •  I understand that triage is not a commitment to a fix date.
                          Metadata
                          Metadata
                          Assignees
                          No one assigned
                            Labels
                            bug
                            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("// 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); }
})();
})();

                              Skip to content
                              [Bug] mouse wheel behaves unexpecedly, produces dead pop up window #5655
                              Open
                              #5660
                              Open
                              [Bug] mouse wheel behaves unexpecedly, produces dead pop up window#5655
                              #5660
                              Labels
                              bug
                              Description
                              @ddyer0
                              ddyer0
                              opened on Sep 1, 2026
                              Summary
                              I was looking at the profiles list and hit the mouse scroll wheel ( I expected to see more profiles than this)
                              
unexpectedly, this window poped up. The entire interface froze this time. Other times the unexpected
                              
window can be closed with the close button.
                              Image
                              Minimal reproducer
                              play with the mouse scroll wheel while looking at the profile pane
                              Steps to reproduce
                              try it
                              Expected and observed behavior
                              scroll wheel should scroll, not popup. Note that in this case there was nothing available
                              
to scroll to - everything is already displayed.
                              Codename One version
                              current
                              JDK version
                              n/a
                              Target environment
                              eclipse
                              Last known working version
                              No response
                              Logs and diagnostics
                              Screenshots or recordings
                              No response
                              Report checks
                              •  I searched existing issues and discussions for this behavior.
                              •  The reproducer contains no credentials, signing keys, or private customer data.
                              •  I understand that triage is not a commitment to a fix date.
                              Metadata
                              Metadata
                              Assignees
                              No one assigned
                                Labels
                                bug
                                Type
                                No type
                                Projects
                                No projects
                                  Milestone
                                  No milestone
                                  Relationships
                                  None yet
                                  Development
                                  No branches or pull requests
                                  Issue actions