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Nightly builds (crashes and bug fixes)

«  Thursday, April 2, 2026 

#

Outstanding bugs
Bug Component Impact Summary
1989109 XPConnect 2
type 1
see_also 1
Support JSON modules and CSS Module Scripts with chrome:// URLs
2008597 Security: PSM 10
priority 5
type 1
duplicates 4
Remove mechanism for retrying failed connections without ML-KEM
2016133 Search 2
type 1
see_also 1
Allow users to choose a Default search engine for Standard and Private Mode
2019981 Machine Learning: Frontend 1
type 1
Remove Memories when user block Smart Window feature from AI Control
2020527 Browser Engine 1
type 1
Control Shake to Summarize with AI Controls
2022634 JavaScript Engine 8
priority 5
type 1
duplicates 2
Update irregexp to new version 2d83940f2ff7ddc5da358c08d108f1edd9180545 from 2026-03-11 00:00:00
2025553 New Tab Page 1
type 1
Newtab First-time wallpaper setting improvements - experiment graduation & pref splitting work
2025604 Graphics: WebRender 0
Remove DL item cache
2027888 Enterprise Policies 20
priority 5
severity 5
type 2
keywords 2
duplicates 2
tracking_firefox149 4
Homepage/Startpage policies no longer work
2028260 Performance 1
type 1
JetStream3 shouldn't do profiling runs by default
2028317 New Tab Page 1
type 1
Nova customization panel - Update toggle sections height and toggle-off logic
2028385 XPCOM 1
type 1
Add nsTSubstring::ToUnsignedInteger64
2028599 Graphics: Text 7
priority 4
severity 2
type 1
Update harfbuzz to new version 14.0.0 from 2026-04-01 14:54:05
2028629 PDF Viewer 1
type 1
Update PDF.js to new version e37709ea769d037218c5f509f7708b09c4106b74 from 2026-04-01 20:28:59
Other bugs
Bug Component Impact Summary
1832869 DOM: Core & HTML 4
severity 2
type 2
Only restore dialog focus if focus is in the dialog
1968107 Settings UI 0
Convert settings related to Account and sync page to config-based settings
1999012 Sidebar 1
see_also 1
Actually hide or remove `sidebar-shown` attribute when in fullscreen.
2001415 Experimentation and Telemetry 9
priority 4
see_also 5
Demo patch to demonstrate new pref setting mechanism and perform general manual integration testing
2013115 Settings UI 0
Update copy and illustrations for Account and sync page
2016058 Tabbed Browser 7
priority 3
severity 2
type 2
A Note with long text (1003 characters) is saved by pressing ENTER even if the "Save" button is disabled
2016541 JavaScript Engine: JIT 11
priority 5
severity 2
type 2
keywords 2
Incomplete Jitdump files on Android
2020475 Translations 0
[GV] Update TranslationsController to Accomodate AI Controls by Adding Errors
2022219 Settings UI -2
regressions -2
The Smart Window ping is not displayed for the browser.ai_control_is_blocking metric
2022727 DOM: Animation 4
severity 2
type 2
Assertion failure: aTimelineDuration (the timeline duration of scroll-timeline is always non-zero now), at /builds/worker/checkouts/gecko/dom/animation/TimingParams.cpp:232
2023948 Translations 1
see_also 1
Add a method to clear translations stores
2024014 CSS Parsing and Computation 0
Implement multi-value support in StylePropertyMapReadOnly::GetAll
2025052 Address Bar 5
priority 5
Update sports suggestions icons and add a baseball icon
2025807 General 8
priority 3
severity 1
type 2
keywords 2
mach commands output jj snapshot logs
2026585 Tabbed Browser 4
type 2
keywords 2
Missing downloading card and progress bar in Ai tab groups suggestions
2027741 DOM: Content Processes 0
Do not call InitGraphicsDeviceData on a moved object
2027828 Translations 0
TranslationsAction.SetTranslationsEnabledAction should also call the appropriate AIFeatures mechanism and set the correct state
2027836 Task Configuration 0
Add a pull request number parameter to Github graphs
2027880 Tabs 0
style issue with new tab border with one tab
2027892 Machine Learning: Frontend 8
type 2
keywords 2
tracking_firefox150 4
Include memories_optin metric for Smart Window setting telemetry
2028197 Task Configuration 2
type 2
Dynamic chunking uses base job runtimes for variant tasks
2028237 Browser Engine 0
Remove LLM.Response abstraction
2028304 Source Documentation 0
Jujutsu doc updates
2028354 Toolchains 2
type 2
downloading macOS SDK 26.2 fails with HTTP 403
2028399 CSS Parsing and Computation 0
Re-enable the WPT container-queries/whitespace-update-after-removal.html test in mozilla CI
2028545 UI Tests 0
Disable the private mode and stories entry point feature in UI tests
2028590 UI Tests 2
type 2
Resolve issue with multiple UI efficiency tests failing in navigateToPage
2028606 Graphics 0
Log GPU process launch error details in the gfx critical log
2028657 CSS Parsing and Computation 2
type 2
Avoid trivial duplicate entries in the SelectorMap's disjoint bucket list.
  1. SerializeJSONProperty(JSContext*, JS::Value const&, (anonymous namespace)::StringifyContext*) (21.43%)
  2. AsyncShutdownTimeout | IOUtils: waiting for sendTelemetry IO to complete | TelemetryController: shutting down (7.14%)
  3. AsyncShutdownTimeout | profile-change-teardown | ServiceWorkerShutdownBlocker: shutting down Service Workers (7.14%)
  4. GetProxyGCObjectKind (7.14%)
  5. JS::Rooted<T>::~Rooted (7.14%)
  6. JSObject::isCallable (7.14%)
  7. RtlpUnwindPrologue | RtlpxVirtualUnwind | RtlpUnwindPrologue | RtlpxVirtualUnwind | RtlpUnwindPrologue | RtlpxVirtualUnwind | RtlpUnwindPrologue | RtlpxVirtualUnwind | RtlpUnwindPrologue | RtlpxVirtualUnwind | RtlpUnwindPrologue | RtlpxVirtualUnwind | ... (7.14%)
  8. js::EnumFlags<T>::hasAnyFlag (7.14%)
  9. js::gc::HeaderWord::get (7.14%)
  10. mozilla::dom::ChromeUtils::RequestProcInfo (7.14%)
  11. shutdownhang | mozilla::SpinEventLoopUntil | mozilla::net::nsHttpConnectionMgr::Shutdown (7.14%)
  12. zlib_rs::deflate::State::d_code (7.14%)