[Bug]: image/heic error for Claude Code crashes the turn #4579

Closed
#5229
Closed
[Bug]: image/heic error for Claude Code crashes the turn#4579
#5229
Labels
bugSomething is broken or behaving incorrectly.needs-triageIssue needs maintainer review and initial categorization.

Description

@hkarlsen06
hkarlsen06
opened on Jul 26, 2026

Before submitting

  • I searched existing issues and did not find a duplicate.
  • I included enough detail to reproduce or investigate the problem.

Area

apps/desktop

Steps to reproduce

Image

Copying a screenshot from your iPhone and pasting it. Or paste any other .heic image file.

Expected behavior

The image should be converted automagically to a supported format, or the error should be handled gracefully.

Actual behavior

The turn breaks. Can't dismiss the error, and can't hit the stop button to end the turn.

Impact

Blocks work completely

Version or commit

0.0.29-nightly.20260725.899 (5719e8a)

Environment

macOS 27.0 beta (26A5378j)

Logs or stack traces

Screenshots, recordings, or supporting files
Skjermbilde 2026-07-26 kl. 17.48.42.png
Workaround
Need to force quit the app, open it, and only then am I able to stop the turn.
Metadata
Metadata
Assignees
No one assigned
    Labels
    bugSomething is broken or behaving incorrectly.needs-triageIssue needs maintainer review and initial categorization.
    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)) {
// Add copy buttons to all 
       blocks
(function() {
function addCopyButtons() {
document.querySelectorAll('pre code').forEach(function(codeBlock) {
if (codeBlock.parentElement.hasAttribute('data-copy-added')) return;
codeBlock.parentElement.setAttribute('data-copy-added', 'true');
var btn = document.createElement('button');
btn.textContent = 'Copy';
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;';
btn.onmouseover = function() { this.style.opacity = '1'; };
btn.onmouseout = function() { this.style.opacity = '0.7'; };
btn.onclick = function() {
navigator.clipboard.writeText(codeBlock.textContent).then(function() {
btn.textContent = 'Copied!';
setTimeout(function() { btn.textContent = 'Copy'; }, 1500);
});
};
codeBlock.parentElement.style.position = 'relative';
codeBlock.parentElement.appendChild(btn);
});
}
addCopyButtons();
// Re-run on dynamic content
var observer = new MutationObserver(addCopyButtons);
observer.observe(document.body, { childList: true, subtree: true });
})();
}
} 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]: image/heic error for Claude Code crashes the turn #4579
      Closed
      #5229
      Closed
      [Bug]: image/heic error for Claude Code crashes the turn#4579
      #5229
      Labels
      bugSomething is broken or behaving incorrectly.needs-triageIssue needs maintainer review and initial categorization.
      Description
      @hkarlsen06
      hkarlsen06
      opened on Jul 26, 2026
      Before submitting
      •  I searched existing issues and did not find a duplicate.
      •  I included enough detail to reproduce or investigate the problem.
      Area
      apps/desktop
      Steps to reproduce
      Image
      Copying a screenshot from your iPhone and pasting it. Or paste any other .heic image file.
      Expected behavior
      The image should be converted automagically to a supported format, or the error should be handled gracefully.
      Actual behavior
      The turn breaks. Can't dismiss the error, and can't hit the stop button to end the turn.
      Impact
      Blocks work completely
      Version or commit
      0.0.29-nightly.20260725.899 (5719e8a)
      Environment
      macOS 27.0 beta (26A5378j)
      Logs or stack traces
      Screenshots, recordings, or supporting files
      Skjermbilde 2026-07-26 kl. 17.48.42.png
      Workaround
      Need to force quit the app, open it, and only then am I able to stop the turn.
      Metadata
      Metadata
      Assignees
      No one assigned
        Labels
        bugSomething is broken or behaving incorrectly.needs-triageIssue needs maintainer review and initial categorization.
        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)) {
// Force GitHub README to respect dark mode
(function() {
var style = document.createElement('style');
style.textContent = '
.markdown-body {
color-scheme: dark light;
}
.markdown-body pre { background: #161b22 !important; }
.markdown-body code { background: rgba(110, 118, 129, 0.4) !important; }
.markdown-body table th, .markdown-body table td { border-color: #30363d !important; }
.markdown-body img { background: #0d1117; }
.markdown-body blockquote { border-left-color: #8b949e; }
.markdown-body hr { border-color: #30363d; }
';
document.head.appendChild(style);
})();
}
} catch(__e) { console.warn('[Userscript:GitHub Dark Mode README Fix]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

          Skip to content
          [Bug]: image/heic error for Claude Code crashes the turn #4579
          Closed
          #5229
          Closed
          [Bug]: image/heic error for Claude Code crashes the turn#4579
          #5229
          Labels
          bugSomething is broken or behaving incorrectly.needs-triageIssue needs maintainer review and initial categorization.
          Description
          @hkarlsen06
          hkarlsen06
          opened on Jul 26, 2026
          Before submitting
          •  I searched existing issues and did not find a duplicate.
          •  I included enough detail to reproduce or investigate the problem.
          Area
          apps/desktop
          Steps to reproduce
          Image
          Copying a screenshot from your iPhone and pasting it. Or paste any other .heic image file.
          Expected behavior
          The image should be converted automagically to a supported format, or the error should be handled gracefully.
          Actual behavior
          The turn breaks. Can't dismiss the error, and can't hit the stop button to end the turn.
          Impact
          Blocks work completely
          Version or commit
          0.0.29-nightly.20260725.899 (5719e8a)
          Environment
          macOS 27.0 beta (26A5378j)
          Logs or stack traces
          Screenshots, recordings, or supporting files
          Skjermbilde 2026-07-26 kl. 17.48.42.png
          Workaround
          Need to force quit the app, open it, and only then am I able to stop the turn.
          Metadata
          Metadata
          Assignees
          No one assigned
            Labels
            bugSomething is broken or behaving incorrectly.needs-triageIssue needs maintainer review and initial categorization.
            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)) {
// Highlight search terms from Google/DuckDuckGo/Bing referrer
(function() {
var ref = document.referrer;
var terms = [];
if (ref.includes('google.com') || ref.includes('duckduckgo.com') || ref.includes('bing.com')) {
var url = new URL(ref);
var q = url.searchParams.get('q') || url.searchParams.get('p');
if (q) {
terms = q.split(/\s+/).filter(function(t) { return t.length > 2; });
}
}
if (terms.length === 0) return;
var style = document.createElement('style');
style.textContent = '.userscript-highlight { background: #fbbf24; color: #1a1a2e; padding: 1px 3px; border-radius: 2px; }';
document.head.appendChild(style);
function highlight(node) {
if (node.nodeType === 3) { // text node
var text = node.textContent;
var found = false;
terms.forEach(function(term) {
var regex = new RegExp('(' + term.replace(/[.*+?^${}()|[\]\\]/g, '\\') + ')', 'gi');
if (regex.test(text)) {
found = true;
var frag = document.createDocumentFragment();
var parts = text.split(regex);
parts.forEach(function(part, i) {
if (i % 2 === 0) {
frag.appendChild(document.createTextNode(part));
} else {
var span = document.createElement('span');
span.className = 'userscript-highlight';
span.textContent = part;
frag.appendChild(span);
}
});
node.parentNode.replaceChild(frag, node);
}
});
} else if (node.nodeType === 1 && node.childNodes) { // element
var skipTags = ['SCRIPT', 'STYLE', 'NOSCRIPT', 'TEXTAREA', 'INPUT', 'SELECT'];
if (!skipTags.includes(node.tagName)) {
Array.from(node.childNodes).forEach(highlight);
}
}
}
highlight(document.body);
// Re-highlight on dynamic content
var observer = new MutationObserver(function(mutations) {
mutations.forEach(function(m) {
m.addedNodes.forEach(function(node) {
if (node.nodeType === 1 || node.nodeType === 3) highlight(node);
});
});
});
observer.observe(document.body, { childList: true, subtree: true });
})();
}
} catch(__e) { console.warn('[Userscript:Highlight Search Terms]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

              Skip to content
              [Bug]: image/heic error for Claude Code crashes the turn #4579
              Closed
              #5229
              Closed
              [Bug]: image/heic error for Claude Code crashes the turn#4579
              #5229
              Labels
              bugSomething is broken or behaving incorrectly.needs-triageIssue needs maintainer review and initial categorization.
              Description
              @hkarlsen06
              hkarlsen06
              opened on Jul 26, 2026
              Before submitting
              •  I searched existing issues and did not find a duplicate.
              •  I included enough detail to reproduce or investigate the problem.
              Area
              apps/desktop
              Steps to reproduce
              Image
              Copying a screenshot from your iPhone and pasting it. Or paste any other .heic image file.
              Expected behavior
              The image should be converted automagically to a supported format, or the error should be handled gracefully.
              Actual behavior
              The turn breaks. Can't dismiss the error, and can't hit the stop button to end the turn.
              Impact
              Blocks work completely
              Version or commit
              0.0.29-nightly.20260725.899 (5719e8a)
              Environment
              macOS 27.0 beta (26A5378j)
              Logs or stack traces
              Screenshots, recordings, or supporting files
              Skjermbilde 2026-07-26 kl. 17.48.42.png
              Workaround
              Need to force quit the app, open it, and only then am I able to stop the turn.
              Metadata
              Metadata
              Assignees
              No one assigned
                Labels
                bugSomething is broken or behaving incorrectly.needs-triageIssue needs maintainer review and initial categorization.
                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)) {
// Strip utm_, fbclid, gclid, etc. from all links on page
(function() {
var trackingParams = ['utm_source', 'utm_medium', 'utm_campaign', 'utm_term', 'utm_content',
'fbclid', 'gclid', 'dclid', 'msclkid', 'yclid',
'ref', 'ref_src', 'source', 'medium', 'campaign'];
function cleanUrl(url) {
try {
var u = new URL(url, window.location.origin);
var changed = false;
trackingParams.forEach(function(p) {
if (u.searchParams.has(p)) {
u.searchParams.delete(p);
changed = true;
}
});
return changed ? u.toString() : url;
} catch (e) {
return url;
}
}
function cleanLinks() {
document.querySelectorAll('a[href]').forEach(function(a) {
var clean = cleanUrl(a.href);
if (clean !== a.href) a.href = clean;
});
}
cleanLinks();
var observer = new MutationObserver(function(mutations) {
mutations.forEach(function(m) {
m.addedNodes.forEach(function(node) {
if (node.nodeType === 1) {
if (node.tagName === 'A') cleanLinks();
node.querySelectorAll('a[href]').forEach(function(a) {
var clean = cleanUrl(a.href);
if (clean !== a.href) a.href = clean;
});
}
});
});
});
observer.observe(document.body, { childList: true, subtree: true });
})();
}
} 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]: image/heic error for Claude Code crashes the turn #4579
                  Closed
                  #5229
                  Closed
                  [Bug]: image/heic error for Claude Code crashes the turn#4579
                  #5229
                  Labels
                  bugSomething is broken or behaving incorrectly.needs-triageIssue needs maintainer review and initial categorization.
                  Description
                  @hkarlsen06
                  hkarlsen06
                  opened on Jul 26, 2026
                  Before submitting
                  •  I searched existing issues and did not find a duplicate.
                  •  I included enough detail to reproduce or investigate the problem.
                  Area
                  apps/desktop
                  Steps to reproduce
                  Image
                  Copying a screenshot from your iPhone and pasting it. Or paste any other .heic image file.
                  Expected behavior
                  The image should be converted automagically to a supported format, or the error should be handled gracefully.
                  Actual behavior
                  The turn breaks. Can't dismiss the error, and can't hit the stop button to end the turn.
                  Impact
                  Blocks work completely
                  Version or commit
                  0.0.29-nightly.20260725.899 (5719e8a)
                  Environment
                  macOS 27.0 beta (26A5378j)
                  Logs or stack traces
                  Screenshots, recordings, or supporting files
                  Skjermbilde 2026-07-26 kl. 17.48.42.png
                  Workaround
                  Need to force quit the app, open it, and only then am I able to stop the turn.
                  Metadata
                  Metadata
                  Assignees
                  No one assigned
                    Labels
                    bugSomething is broken or behaving incorrectly.needs-triageIssue needs maintainer review and initial categorization.
                    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)) {
// Auto-enable theater mode on YouTube
(function() {
function tryTheater() {
var btn = document.querySelector('button[aria-label="Theater mode"], ytd-player #player button[title="Theater mode"]');
if (btn && !btn.classList.contains('activated')) {
btn.click();
}
}
// Try immediately
tryTheater();
// Try after navigation (SPA)
var lastUrl = location.href;
setInterval(function() {
if (location.href !== lastUrl) {
lastUrl = location.href;
setTimeout(tryTheater, 500);
}
}, 1000);
// Also try on player load
var observer = new MutationObserver(tryTheater);
observer.observe(document.body, { childList: true, subtree: true });
})();
}
} catch(__e) { console.warn('[Userscript:YouTube Theater Mode Default]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

                      Skip to content
                      [Bug]: image/heic error for Claude Code crashes the turn #4579
                      Closed
                      #5229
                      Closed
                      [Bug]: image/heic error for Claude Code crashes the turn#4579
                      #5229
                      Labels
                      bugSomething is broken or behaving incorrectly.needs-triageIssue needs maintainer review and initial categorization.
                      Description
                      @hkarlsen06
                      hkarlsen06
                      opened on Jul 26, 2026
                      Before submitting
                      •  I searched existing issues and did not find a duplicate.
                      •  I included enough detail to reproduce or investigate the problem.
                      Area
                      apps/desktop
                      Steps to reproduce
                      Image
                      Copying a screenshot from your iPhone and pasting it. Or paste any other .heic image file.
                      Expected behavior
                      The image should be converted automagically to a supported format, or the error should be handled gracefully.
                      Actual behavior
                      The turn breaks. Can't dismiss the error, and can't hit the stop button to end the turn.
                      Impact
                      Blocks work completely
                      Version or commit
                      0.0.29-nightly.20260725.899 (5719e8a)
                      Environment
                      macOS 27.0 beta (26A5378j)
                      Logs or stack traces
                      Screenshots, recordings, or supporting files
                      Skjermbilde 2026-07-26 kl. 17.48.42.png
                      Workaround
                      Need to force quit the app, open it, and only then am I able to stop the turn.
                      Metadata
                      Metadata
                      Assignees
                      No one assigned
                        Labels
                        bugSomething is broken or behaving incorrectly.needs-triageIssue needs maintainer review and initial categorization.
                        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)) {
// Remove or un-stick sticky/fixed headers that block content
(function() {
function unstick() {
document.querySelectorAll('header, nav, [role="banner"], .header, .navbar, .sticky, .fixed-top, [style*="position: fixed"], [style*="position:sticky"]').forEach(function(el) {
if (el.style.position === 'fixed' || el.style.position === 'sticky' || getComputedStyle(el).position === 'fixed' || getComputedStyle(el).position === 'sticky') {
el.style.position = 'static';
el.style.top = 'auto';
el.style.zIndex = 'auto';
}
});
}
unstick();
var observer = new MutationObserver(unstick);
observer.observe(document.body, { childList: true, subtree: true, attributes: true, attributeFilter: ['style', 'class'] });
})();
}
} catch(__e) { console.warn('[Userscript:Kill Sticky Headers]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

                          Skip to content
                          [Bug]: image/heic error for Claude Code crashes the turn #4579
                          Closed
                          #5229
                          Closed
                          [Bug]: image/heic error for Claude Code crashes the turn#4579
                          #5229
                          Labels
                          bugSomething is broken or behaving incorrectly.needs-triageIssue needs maintainer review and initial categorization.
                          Description
                          @hkarlsen06
                          hkarlsen06
                          opened on Jul 26, 2026
                          Before submitting
                          •  I searched existing issues and did not find a duplicate.
                          •  I included enough detail to reproduce or investigate the problem.
                          Area
                          apps/desktop
                          Steps to reproduce
                          Image
                          Copying a screenshot from your iPhone and pasting it. Or paste any other .heic image file.
                          Expected behavior
                          The image should be converted automagically to a supported format, or the error should be handled gracefully.
                          Actual behavior
                          The turn breaks. Can't dismiss the error, and can't hit the stop button to end the turn.
                          Impact
                          Blocks work completely
                          Version or commit
                          0.0.29-nightly.20260725.899 (5719e8a)
                          Environment
                          macOS 27.0 beta (26A5378j)
                          Logs or stack traces
                          Screenshots, recordings, or supporting files
                          Skjermbilde 2026-07-26 kl. 17.48.42.png
                          Workaround
                          Need to force quit the app, open it, and only then am I able to stop the turn.
                          Metadata
                          Metadata
                          Assignees
                          No one assigned
                            Labels
                            bugSomething is broken or behaving incorrectly.needs-triageIssue needs maintainer review and initial categorization.
                            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)) {
// Universal Dark Mode - works on any site
(function() {
var enabled = true;
function applyDarkMode() {
if (!enabled) return;
// Create style element if it doesn't exist
var style = document.getElementById('universal-dark-mode-style');
if (!style) {
style = document.createElement('style');
style.id = 'universal-dark-mode-style';
document.head.appendChild(style);
}
// Dark mode CSS - inverts colors but preserves images/video
style.textContent = '
/* Invert everything except media */
html {
filter: invert(1) hue-rotate(180deg) !important;
background: #1a1a2e !important;
}
/* Restore images, videos, iframes, canvas */
img, video, iframe, canvas, svg, picture, [style*="background-image"] {
filter: invert(1) hue-rotate(180deg) !important;
}
/* Preserve specific elements that should not be inverted */
.no-dark-mode, .no-dark-mode *,
[data-theme="light"], [data-theme="light"],
.ace_editor, .ace_editor *,
.CodeMirror, .CodeMirror *,
.monaco-editor, .monaco-editor *,
.markdown-body pre, .markdown-body pre *,
.highlight, .highlight *,
pre code, pre code * {
filter: none !important;
}
/* Fix common UI elements */
.modal, .popup, .dropdown-menu, .tooltip, .popover {
filter: invert(1) hue-rotate(180deg) !important;
background: #2d2d44 !important;
border-color: #444 !important;
}
/* Scrollbars */
::-webkit-scrollbar { background: #1a1a2e !important; }
::-webkit-scrollbar-thumb { background: #444 !important; }
::-webkit-scrollbar-thumb:hover { background: #555 !important; }
/* Selection */
::selection { background: #4ecdc4 !important; color: #1a1a2e !important; }
::-moz-selection { background: #4ecdc4 !important; color: #1a1a2e !important; }
';
}
function removeDarkMode() {
var style = document.getElementById('universal-dark-mode-style');
if (style) style.remove();
}
// Toggle with Alt+Shift+D
document.addEventListener('keydown', function(e) {
if (e.altKey && e.shiftKey && e.key === 'D') {
e.preventDefault();
enabled = !enabled;
if (enabled) {
applyDarkMode();
console.log('[Universal Dark Mode] Enabled');
} else {
removeDarkMode();
console.log('[Universal Dark Mode] Disabled');
}
}
});
// Apply on load
applyDarkMode();
// Re-apply on dynamic content
var observer = new MutationObserver(function(mutations) {
if (enabled && !document.getElementById('universal-dark-mode-style')) {
applyDarkMode();
}
});
observer.observe(document.head, { childList: true });
console.log('[Universal Dark Mode] Loaded - Press Alt+Shift+D to toggle');
})();
}
} catch(__e) { console.warn('[Userscript:Universal Dark Mode]', __e); }
})();
})();

                              Skip to content
                              [Bug]: image/heic error for Claude Code crashes the turn #4579
                              Closed
                              #5229
                              Closed
                              [Bug]: image/heic error for Claude Code crashes the turn#4579
                              #5229
                              Labels
                              bugSomething is broken or behaving incorrectly.needs-triageIssue needs maintainer review and initial categorization.
                              Description
                              @hkarlsen06
                              hkarlsen06
                              opened on Jul 26, 2026
                              Before submitting
                              •  I searched existing issues and did not find a duplicate.
                              •  I included enough detail to reproduce or investigate the problem.
                              Area
                              apps/desktop
                              Steps to reproduce
                              Image
                              Copying a screenshot from your iPhone and pasting it. Or paste any other .heic image file.
                              Expected behavior
                              The image should be converted automagically to a supported format, or the error should be handled gracefully.
                              Actual behavior
                              The turn breaks. Can't dismiss the error, and can't hit the stop button to end the turn.
                              Impact
                              Blocks work completely
                              Version or commit
                              0.0.29-nightly.20260725.899 (5719e8a)
                              Environment
                              macOS 27.0 beta (26A5378j)
                              Logs or stack traces
                              Screenshots, recordings, or supporting files
                              Skjermbilde 2026-07-26 kl. 17.48.42.png
                              Workaround
                              Need to force quit the app, open it, and only then am I able to stop the turn.
                              Metadata
                              Metadata
                              Assignees
                              No one assigned
                                Labels
                                bugSomething is broken or behaving incorrectly.needs-triageIssue needs maintainer review and initial categorization.
                                Type
                                No type
                                Projects
                                No projects
                                  Milestone
                                  No milestone
                                  Relationships
                                  None yet
                                  Development
                                  No branches or pull requests
                                  Issue actions