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Nightly builds (crashes and bug fixes)

«  Thursday, October 2, 2025 

#

Outstanding bugs
Bug Component Impact Summary
1066141 General 5
severity 1
type 2
keywords 2
about:support mistakenly shows presence of user.js in Firefox for Android
1868857 JavaScript Engine 5
priority 4
type 1
Suppress deleted properties using low-bit tags instead of removal
1917963 Networking 7
priority 4
severity 2
type 1
Add support in Accept-Encoding for compression dictionaries -- dcb, dcz
1917965 Networking 7
priority 4
severity 2
type 1
Add support for Content-Encoding for compression dictionaries -- dcb, dcz
1917970 Networking 9
priority 4
severity 2
type 1
duplicates 2
Implement compression dictionaries for brotli and zstd
1917974 Networking: Cache 7
priority 4
severity 2
type 1
Add support for sending header Available-Dictionary
1917975 Networking: Cache 7
priority 4
severity 2
type 1
Query cache for available compression dictionaries for a URL
1917976 Networking: Cache 7
priority 4
severity 2
type 1
Support match-dest for Fetch with compression dictionaries
1917982 Networking: Cache 7
priority 4
severity 2
type 1
Add support for receiving Use-As-Dictionary headers
1918013 Networking: Cache 4
priority 3
type 1
Support <link rel="dictionary" href="...”>
1918741 Networking: Cache 4
priority 3
type 1
Tests for compression dictionaries
1949981 Networking: Cache 5
priority 4
type 1
Add support for dictionaries that are overwritten or deleted
1975014 Networking: Cache 5
priority 3
severity 1
type 1
Add a pref for Compression Dictionaries
1975024 Networking: Cache 4
priority 3
type 1
Cleanup some cache code and locking to prepare for Compression Dictionaries
1977466 JavaScript Engine 6
priority 5
type 1
Support adding to the front of a Fifo.
1978494 Networking: Cache 7
priority 4
severity 2
type 1
Support writing and reading cache metadata for Compression Dictionaries
1978495 Networking: Cache 7
priority 4
severity 2
type 1
Support clearing dictionaries for a site via clear-site and clear cookie headers
1978496 Networking: Cache 7
priority 4
severity 2
type 1
Add logging for Compression Dictionaries
1979087 Networking: Cache 5
priority 4
type 1
Use URLPattern for matching Compression Dictionary entries
1979902 Netmonitor 1
type 1
Enable the built-in codemirror 6 search extension
1987972 Audio/Video 6
priority 5
type 1
Expand context of target word in find flow appox 20 characters before and after
1988076 Networking: Cache 6
priority 3
severity 2
type 1
Add shutdown and related cleanup for Compression Dictionaries
1988235 Toolbar 5
priority 4
type 1
Tighten the layout for address bar and navigation bar shown together
1988238 Toolbar 5
priority 4
type 1
Spread more the buttons in the navigation bar
1988610 Security: PSM 5
priority 4
type 1
Add a nimbus feature for setting the CRLite channel on Android
1989385 Toolbar 2
type 1
see_also 1
Enable Bugs 1978810 and 1976713 beyond Nightly
1990349 JavaScript Engine: JIT 6
priority 5
type 1
Remove uses of arguments rectifier in GenerateImportJitExit
1990387 Machine Learning 6
priority 4
type 1
see_also 1
Add streaming to openai compatible endpoint
1991224 Translations 1
type 1
Allow about:translations <textarea> elements to resize with their content
1991752 Audio/Video: Playback 10
priority 5
type 1
tracking_firefox145 4
Enabled matroska by default
1991981 PDF Viewer 3
type 1
duplicates 2
Update PDF.js to new version 9d917b289696ee9e6b90b249f251e90c7d060a2e from 2025-10-01 17:29:17
1991984 JavaScript Engine 1
type 1
Cleanup and enhance hazard docs
Other bugs
Bug Component Impact Summary
1773790 Address Bar 0
Frequent browser/components/urlbar/tests/browser/browser_UrlbarInput_setURI.js | single tracking bug
1950965 Networking: Cache 4
priority 4
Update about:cache for compression dictionary support
1950972 Networking: Cache 4
priority 4
Decompress cache entries before storage that are marked with Use-As-Dictionary
1968152 Pocket 3
priority 3
Remove pocket prefs
1970744 General 0
[WebCompat Reporter v2] Add a checkbox for sending URLs blocked by ETP
1971068 DOM: Content Processes 4
priority 1
severity 1
type 2
Frequent dom/ipc/tests/browser_hide_tooltip.js | single tracking bug
1973593 Toolbar 3
priority 3
Remove unused NewTabMenu
1978284 Netmonitor 0
Enable cm6 for the SourcePreview component
1978605 Homepage 4
priority 3
see_also 1
Update private browsing mode to the latest Homepage Redesign 2025
1981300 Layout: Grid 0
Remove layout.css.grid-flex-spanning-items-intrinsic-sizing.enabled preference
1982132 Search 5
priority 5
Advocate message for new tab opened scenario
1982963 Performance: Memory 0
Collect PSI information in crash reports to study correlation between PSI and oom-killer on Linux
1983154 JavaScript Engine 5
priority 5
Prototype a JS Engine managed MicroTask Queue
1984157 Networking: Cache 4
priority 4
Handle Vary headers for Compression Dictionaries
1984198 Networking: Cache 4
priority 4
Support clear-by-origin-attributes for Compression Dictionaries
1985114 Toolbar 0
Weird animation transition when clicking a menu item that closes the menu
1985754 Toolbar 4
severity 2
type 2
Touching background with keyboard up does not go back to 'normal' toolbar
1986477 Nimbus Desktop Client 9
priority 5
severity 2
type 2
ProfilesDatastoreService shutdown blocker not removed correctly
1988158 Toolbar 3
severity 1
type 2
[Toolbar redesign] Missing separators in search engine dropdown menu compared to Figma design
1989192 Privacy: Anti-Tracking 0
Remove or update metrics expiring at the end of Firefox 145: security.ui.protectionspopup.cl* before Gecko version gets increased to 146 on 2025-10-13
1989875 New Tab Page 0
Weather opt-in - Add telemetry
1990170 Layout: Grid 6
severity 2
type 2
keywords 2
grid rows are squished in Firefox with version 143's multi-pass track sizing behavior (for grids with a specified 'max-height' and whose items have effective 'min-height:0')
1990504 Settings UI 0
Fix Preferences and Settings types being implicitly any
1990529 Storage 4
priority 3
see_also 1
storage.sync returns sanitized "An unexpected error occurred" error without logging the original error
1990785 Disability Access APIs 14
priority 3
severity 5
type 2
keywords 4
[Only MacOS 13][A11y]Crash only occurs when a few comments are added to a PDF in Firefox Nightly before activating VoiceOver
1990890 New Tab Page 9
priority 5
severity 2
type 2
Focus outline on the context menu for New Tab Weather widget uses the wrong color
1990891 New Tab Page 9
priority 5
severity 2
type 2
Focus outline for New Tab Shortcuts and its context menu uses the wrong color
1991490 New Tab Page 10
duplicates 2
tracking_firefox145 4
tracking_firefox144 4
Stalled out download of trainhop XPI can cause shutdown hangs / crashes
1991535 Tabbed Browser 11
priority 5
severity 2
type 2
duplicates 2
Linux: Memory leak when closing a Split View
1991688 Privacy: Anti-Tracking 4
priority 4
Storage-Access-Headers: Enable Nightly-Only
1991797 JavaScript Engine 0
Simplify the macOS DTPerformanceSession loading logic
1991839 Storage: localStorage & sessionStorage 3
severity 1
type 2
StorageActivityService may double register observers
1991884 General 0
The buttons from "Add to Home screen" prompt are too low inside the prompt
1991892 Firefox Source Docs: Content 0
mach try advice to enable the profiler results in: SyntaxError: illegal character U+201C
1991912 General 0
The "Remove" button from Exceptions has extra padding
1991996 Gecko Profiler 2
type 2
Add 'flows' feature to profiler debug preset.
  1. EnterJit (6.25%)
  2. js::frontend::ParseNode::getKind (6.25%)
  3. mozilla::ContentSubtreeIterator::DetermineFirstContent (6.25%)
  4. IPCError-browser | ShutDownKill (4.17%) Known top crash
  5. js::gc::detail::ChunkPtrHasStoreBuffer (4.17%)
  6. mozilla::detail::VectorImpl<T>::new_<T> (4.17%)
  7. <servo_arc::Arc<T> as core::ops::drop::Drop>::drop (2.08%)
  8. AsyncShutdownTimeout | profile-change-teardown | ServiceWorkerShutdownBlocker: shutting down Service Workers (2.08%)
  9. IPCError-browser | GPUProcessKill (2.08%)
  10. JSObject::is<T> (2.08%)
  11. JSScript::getScope (2.08%)
  12. PtrInfo::AnnotatedReleaseAssert (2.08%)
  13. SetEvent | <unknown in igd10iumd64.dll> | CGeometryShader::CLS::FinalConstruct (2.08%)
  14. arena_dalloc | BaseAllocator::free | MozJemalloc::free | PageFree (2.08%)
  15. arena_run_reg_dalloc | arena_t::DallocSmall | arena_dalloc | BaseAllocator::free | MozJemalloc::free | PageFree (2.08%)
  16. core::option::expect_failed | webrender::scene_building::SceneBuilder::build_all (2.08%)
  17. core::option::expect_failed | webrender::scene_building::SceneBuilder::process_common_properties (2.08%)
  18. core::slice::<T>::copy_from_slice (2.08%)
  19. gfxFontGroup::GetDefaultFont (2.08%)
  20. js::BaseShape::realm (2.08%)