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Nightly builds (crashes and bug fixes)

« Friday, March 13, 2026

#

Bug

Component

Impact

Summary

4

severity	2
type	2

`Selection::Extend` may work with `RangeBoundary`s whose tree kinds are different

3

severity	2
type	2
regressions	-2
see_also	1

Make `nsContentUtils::ComparePoints` do the right thing for flattened tree with adding `TreeKind`

4

severity	2
type	2
keywords	2
regressions	-2

Assertion failure: mRef || aOffset == 0, at /builds/worker/workspace/obj-build/dist/include/mozilla/RangeBoundary.h:272

DOM: Core & HTML

0

Make `nsContentUtils::ComparePointsWithIndices` a private method

DOM: Core & HTML

4

severity	2
type	2

`nsINode::IsSelected()` and `IsItemInRangeComparetor` should use `nsContentUtils::ComparePoints` and convert the points to the flattened tree if comparing within the flattened tree

DOM: Core & HTML

0

Make `TestServicesDocument` use `nsContentUtils::ComparePoints`

webrender::renderer::upload::copy_into_staging_buffer (30.95%) Top crash 2021367
mozilla::DisplayItemClipChain::Release (11.90%)
js::gc::HeaderWord::get (9.52%)
IPCError-browser | ShutDownKill (7.14%) Known top crash
OOM | small (4.76%) Known top crash
OOM | unknown | js::AutoEnterOOMUnsafeRegion::crash_impl | js::gc::FreeSpan::allocate (4.76%)
js::gc::detail::ChunkPtrHasStoreBuffer (4.76%)
<unknown in nvwgf2umx.dll> | CVideoProcessor::Blt (2.38%)
EnterJit (2.38%)
JSScript::getScope (2.38%)
OOM | unknown | js::AutoEnterOOMUnsafeRegion::crash_impl | js::AutoEnterOOMUnsafeRegion::crash | v8::internal::Zone::NewArray<T> (2.38%)
js::GCMarker::markCurrentColorInParallel (2.38%)
js::gc::AllocSite::zone (2.38%)
js::gc::InCollectedNurseryRegion (2.38%)
js::jit::FrameDescriptor::type (2.38%)
mozilla::layers::TextureClientRecycleAllocator::CreateOrRecycle (2.38%)
shutdownhang | mozilla::SpinEventLoopUntil(nsTSubstring<T> const&, (anonymous namespace)::ParentImpl::ShutdownBackgroundThread::<T>&&, nsIThread*) | (anonymous namespace)::ParentImpl::ShutdownBackgroundThread (2.38%)
zlib_rs::deflate::State::d_code (2.38%)

#

Outstanding bugs

Bug

Component

Impact

Summary

Android Studio and Gradle Integration

7

priority	4
type	1
duplicates	2

Make apiLint configuration-cache friendly and remove `--no-configuration-cache` tag from gradle.configure

6

priority	5
type	1

Fix static-analysis issues for FFmpegVideoEncoder and FFmpegVideoDecoder.cpp

16

type	2
cc	1
see_also	1
tracking_firefox150	4
tracking_firefox149	4
tracking_firefox148	4

Passkeys no longer function properly

1

type	1

[mozversioncontrol] Support translating url to remote name in `JujutsuRepository.push`

Startup and Profile System

1

type	1

Avoid overwriting profiles.ini where possible

1

type	1

Update android nightly application-services version bump to new version 8218445b4dd68c01159e601bbb11db651638309d from 2026-03-12 05:02:17

4

priority	3
type	1

Make Nightly logo embedded in QR codes less jagged

DOM: Core & HTML

0

Remove dom.movebefore.enabled pref

2

type	1
see_also	1

remove that last common use of the old deprecated code in gfx/ycbcr/yuv_convert.cpp

Other bugs

Bug

Component

Impact

Summary

WebRTC: Signaling

3

priority	3

Implement RTCError for SDP parse errors

0

Do not leave fragment after user deletes their browsing data

3

priority	3

Instrument the about:translations page with technical interaction telemetry

Storage: Cache API

4

type	2
duplicates	2

Perma for some test platforms TEST-UNEXPECTED-ERROR | dom/cache/test/marionette/test_caches_delete_cleanup_after_shutdown.py CachesDeleteCleanupAtShutdownTestCase.test_ensure_cache_cleanup_after_unclean_restart | marionette_driver.

Machine Learning: Frontend

-2

regressions	-2

Add test for Recent Chat menuitem in History menu

Machine Learning: General

7

priority	5
duplicates	2

Add rendering-layer URL validation for AI Window chat messages

11

priority	5
severity	2
type	2
cc	1
see_also	1

new tab page always empty/gray/grey, tab tooltip shows it as about:blank but settings list about:newtab as url to open

9

priority	4
severity	5

Get xpcshell layer working again in mozperftest

Tabbed Browser: Split View

8

priority	3
severity	2
type	2
see_also	1

Ungrouping from tab group preview menu or tab context menu causes split views to separate

4

priority	4

Ensure Firefox icon is aligned on Windows

Source Code Analysis

2

type	2

[Automated review] cargo-audit: warning Crate depends on a unmaintained version of bincode.

Graphics: WebRender

0

Broken subpixel AA and picture caching on linux, due to border-radius on the <body> element to support rounded corners.

10

priority	5
severity	5

Remove speedometer 2 from available tests

Nimbus Desktop Client

2

priority	2

Adding Adaptive Performance Prefs to Nimbus Manifest

0

Update npm packages in newtab directory

Geolocation Provider

0

Enable UX for location permissions on all versions of Windows by using IGeolocator

Android Studio and Gradle Integration

0

Migrate `nimbus-gradle-plugin` to Kotlin

Android Studio and Gradle Integration

0

Migrate `apilint` to Kotlin

2

type	2

Windows 11 Nov 2025 patch changed AltRight key behavior breaks test_keycodes.xhtml

0

Hook up Keycode.KEYCODE_MENU so it opens the firefox settings menu.

8

priority	4
severity	2
type	2

fetch keepalive requests ignore offline network conditions

0

Nova, Sections Layout

JavaScript Engine

4

priority	1
severity	1
type	2

Perma macOS shippable TEST-UNEXPECTED-FAIL | tests/jit-test/jit-test/tests/environments/bug1966196.js | /opt/worker/tasks/task_177248241259915/build/tests/jit-test/jit-test/tests/environments/bug1966196.js:11:1 InternalError: too | single tracking bug

9

priority	5
severity	1
type	2
see_also	1

userScripts in MV2 sandbox does not have a fix for the structuredClone regression

Panning and Zooming

3

priority	3

Allow scroll snap for pixel mouse wheel scrolls on the main thread

3

type	2
see_also	1

YouTube HDR video playback is dull on Windows

3

priority	3

Update moz-toggle so it passes use-design-tokens

3

priority	3

Update moz-visual-picker so it passes use-design-tokens

3

priority	3

Update moz-message-bar so it passes use-design-tokens

0

Update Gradle to version 9.4.0

0

Update OkHttp and Okio to their latest releases and refactor their usage

4

type	2
duplicates	2

Missing CheckedInt isValid() check in DecodedStream::CreateSilenceDataIfGapExists leads to potential heap buffer overflow

3

severity	1
type	2

The “Use VPN for this site” toggle is not read correctly by the screen reader

3

priority	3

Move the debugger icons which shared by other components to a shared location

7

severity	5
type	2

Relay chip is not displayed on Lenovo, Xiaomi and Huawei Tablets

0

Create a vendor bundle for newtab directory

JavaScript Engine

14

priority	4
severity	2
type	2
keywords	2
duplicates	4

Crash under ICScript::prepareForDestruction when running with JIT_OPTION_baselineBatching=true and javascript.options.baselinejit.offthread_compilation_strategy=3

0

Display Summary by <model> & AI can make mistakes disclaimer in summary page

10

priority	5
severity	1
type	2
keywords	2

tabs.move() does not return tabs that were moved in a split view

3

priority	3

Remove Nimbus flag and secret setting for Browsing Mode Toggle feature

3

severity	1
type	2

Email masks "Learn more" link is not left aligned on large screens

web-platform-tests

0

Update web-platform-tests to 04fdaa8faad3b4f84c53dce275936d3b914504b5

Machine Learning: Frontend

0

Telemetry: Add Chat Assistant Metric Events

0

Add model information to the LLMProvider abstraction

Applications: MozharnessCore

0

Reftest failures get reported twice (with second copy having no screenshots in log)

Graphics: WebRender

0

Remove reference frame mapper from DL building

Preferences: Backend

4

severity	2
type	2

Don't capture UUIDs in broken pref files telemetry

Task Configuration

4

type	2
keywords	2

gecko decision task fails on github PRs: Cannot use MACH_BUILD_PYTHON_NATIVE_PACKAGE_SOURCE="system"

0

Get the LLMProvider info into the summarization state for the summary

9

priority	5
severity	2
type	2

Error displayed before PAUSED state when max bandwidth limit is exceeded

Crash Reporting

2

type	2

Code in gathersymbols.py's get_archs() doesn't detect Haswell files on macOS

Machine Learning: Frontend

4

type	2
duplicates	2

Memories list shows empty entries in the applied memories popover

0

Frequent browser/base/content/test/framebusting/browser_framebusting_navigation.js | test_framebusting_navigation - Framebusting notification should show up | single tracking bug

Machine Learning: Frontend

7

priority	5
type	2

Handle non-URI home page prefs on Smart Window switch

0

Make Gecko child process preallocation happen serially and delay it if we're just showing the homescreen

Layout: Scrolling and Overflow

3

priority	3
severity	2
regressions	-2

Minor cleanups in tests in multiple-aligned-targets/

Responsive Design Mode

2

type	2

Perma devtools/client/responsive/test/browser/browser_device_state_restore.js | Value "iPhone 6/7/8" should match an existing menu item. - Didn't expect undefined, but got it | single tracking bug