Current Desktop beta cycle: 138

Uplifts by Product
114 uplifts

  1. OOM | small (12.43%) Known top crash
  2. OOM | unknown | js::AutoEnterOOMUnsafeRegion::crash_impl | js::AutoEnterOOMUnsafeRegion::crash | js::gc::AllocateTenuredCellInGC (8.28%) 1472062
  3. mozilla::GetBootstrap::<T>::operator() (4.73%) 1816848
  4. OOM | unknown | js::AutoEnterOOMUnsafeRegion::crash_impl | mozilla::BitSet<T>::FindNext (3.55%) 1949316
  5. nsFind::FindFromRangeBoundaries (3.55%) 1949877
  6. AsyncShutdownTimeout | AddonManager: Waiting to start provider shutdown. | AddonRepository Background Updater (2.96%) 1841444
  7. style::stylesheets::impl$0::clone (2.96%)
Uplifts and Backouts
Bug Component Summary
  1. OOM | small (18.04%) Known top crash
  2. OOM | unknown | js::AutoEnterOOMUnsafeRegion::crash_impl | js::AutoEnterOOMUnsafeRegion::crash | js::gc::AllocateTenuredCellInGC (14.37%) Top crash 1472062
  3. XREMain::XRE_main (4.59%) 1909700
  4. OOM | unknown | js::AutoEnterOOMUnsafeRegion::crash_impl | js::gc::TraceEdgeInternal (3.67%) 1472062
  5. OOM | unknown | js::AutoEnterOOMUnsafeRegion::crash_impl | js::AutoEnterOOMUnsafeRegion::crash | js::Nursery::maybeMoveRawBufferOnPromotion (2.14%) 1472062
  6. mozilla::Omnijar::Init (1.83%)
  7. js::InternalBarrierMethods<T>::isMarkable (1.53%) 1932424
Uplifts and Backouts
Bug Component Summary
1941759 General mach ide vscode doesn't support extended JSON syntax
1956046 Widget: Gtk [cinnamon] Window snapping issue in Nightly (with Mint-L themes)
1956848 Machine Learning Enable ML Engine by default
1956862 Experimentation and Telemetry Add Telemetry for the Always Request Desktop Site under Settings > Site Settings
  1. OOM | small (14.42%) Known top crash
  2. OOM | unknown | js::AutoEnterOOMUnsafeRegion::crash_impl | js::AutoEnterOOMUnsafeRegion::crash | js::gc::AllocateTenuredCellInGC (10.48%) Top crash 1472062
  3. OOM | unknown | js::AutoEnterOOMUnsafeRegion::crash_impl | js::gc::TraceEdgeInternal (5.19%) 1472062
  4. <unknown in nvwgf2umx.dll> | NDXGI::CDevice::RotateResourceIdentities (4.15%)
  5. nsGlobalWindowInner::ClearDocumentDependentSlots (2.28%) 1803675
  6. mozilla::RestyleManager::ElementStateChanged (2.18%) 1936213
  7. nsFind::FindFromRangeBoundaries (2.18%) 1949877
Uplifts and Backouts
Bug Component Summary
1931562 Messaging System End/close current Review Checker microsurvey
1952530 Tabbed Browser Overlapping pinned tabs
1953664 Nimbus Desktop Client Intermittent toolkit/components/nimbus/test/browser/browser_experimentapi_child.js | Uncaught exception in test bound testGetExperimentFromChildExistingEnrollment - at chrome://mochitests/content/browser/toolkit/components/nimbus/test/browser/
1954772 Networking Crash [@ CanSend]
1956029 Tabbed Browser The suggested Tabs panel does not have a scroll bar and the Cancel and Done buttons are not visible with a lot of tab suggestions
1957050 WebDriver BiDi [Late Beta] Perma webdriver/tests/bidi/network/continue_with_auth/action.py / continue_response/credentials.py | test_provideCredentials - asyncio.exceptions.CancelledError - when Gecko 138 switches to beta on 2025-04-11
1957097 Tabbed Browser Add telemetry for Smart Tab Group Name for empty model suggestion
1957228 Upstream Synchronization perma toolkit/components/telemetry/dap/tests/xpcshell/test_dap.js | xpcshell return code: 0
1957545 JavaScript: WebAssembly Assertion failure: cx->isExceptionPending() || cx->isPropagatingForcedReturn() || cx->hadUncatchableException(), at vm/Interpreter.cpp:401
1957607 DOM: Performance APIs Cast to MouseEvent instead of PointerEvent during interactionId computation
1957623 Privacy: Anti-Tracking Fix possible crash reasons for user-char collection
1957697 General Toolbar is show as fixed when a11y is not enabled.
1957709 Privacy: Anti-Tracking CHIPS needs its own Nimbus feature because of the bus factor of the networking feature
1956153 N/A N/A
  1. OOM | small (13.62%) Known top crash
  2. OOM | unknown | js::AutoEnterOOMUnsafeRegion::crash_impl | js::AutoEnterOOMUnsafeRegion::crash | js::gc::AllocateTenuredCellInGC (13.23%) Top crash 1472062
  3. OOM | unknown | js::AutoEnterOOMUnsafeRegion::crash_impl | js::gc::TraceEdgeInternal (4.67%) 1472062
  4. mozilla::RestyleManager::ElementStateChanged (2.40%) 1936213
  5. js::gc::detail::ChunkPtrHasStoreBuffer (1.75%) 1940438
  6. nsFind::FindFromRangeBoundaries (1.40%) 1949877
  7. msmpeg2vdec.dll | wmf::CreateMFT (1.27%)
Uplifts and Backouts
Bug Component Summary
1951148 Machine Learning add metrics and events related to link preview feature usage
1953399 Tabbed Browser Firefox View page is suggested for smart tabs groups
1955095 Machine Learning update error state card for link preview
1955469 Messaging System [Spike] Investigate suppressing the Windows set default guidance notification toast via messaging system action
1955955 Tabbed Browser Suggested Tabs are duplicated if the onboarding process is interrupted
1956215 Settings UI The Manage Settings Option from the Callout 3 does not redirect the user to the correct option in about:preferences
1956499 Widget 15.05 - 6.35% ts_paint / startup_about_home_paint_cached + 13 more (Linux) regression on Sat March 22 2025
1956624 Sidebar Expand on hover not working as expected if window is not foregrounded
1956909 Sidebar Sidebar expand on hover jumpy after browser close / reopen
1957166 Widget GTK theme changes now can get broadcasted via dbus.
1957393 Sidebar The checkmark for enabling/disabling "Expand sidebar on hover" is not correctly displayed in the Customize Sidebar panel
1957409 Tabbed Browser Tab group lines with collapsed sidebar have become harder to see, blending into window edge with contrasting theme and window background
1957418 Data Loss Prevention Two final actions are displayed inside the DLP Agent on one clipboard paste
1957507 Machine Learning "Foxfooding feedback" for link previews wants better link and/or copy
1957612 Machine Learning Link Preview can no longer generate key points from reader view content
1957777 Tabbed Browser STG - highlight name field when label is suggested
1957902 Data Loss Prevention The notification that Firefox is closed during scanning is no longer displayed
1958112 Other Crash in [@ chromesafe64.dll | _tailMerge_d3dcompiler_47.dll | chromesafe64.dll | NS_TableDrivenQI]
1958222 Widget: Win32 Firefox incorrectly treats folder shortcuts as files when attaching them in webmail.
1958267 Widget: Gtk Crash in [@ settings_changed_cb]
1958293 Layout Crash in [@ mozilla::css::SheetLoadData::VerifySheetReadyToParse]
  1. OOM | unknown | js::AutoEnterOOMUnsafeRegion::crash_impl | js::AutoEnterOOMUnsafeRegion::crash | js::gc::AllocateTenuredCellInGC (15.19%) Top crash 1472062
  2. OOM | small (13.63%) Known top crash
  3. OOM | unknown | js::AutoEnterOOMUnsafeRegion::crash_impl | js::gc::TraceEdgeInternal (5.89%) 1472062
  4. js::gc::detail::ChunkPtrHasStoreBuffer (1.71%) 1940438
  5. js::gc::HeaderWord::get (1.61%) 1948635
  6. nsFind::FindFromRangeBoundaries (1.51%) 1949877
  7. mozilla::dom::quota::QuotaManager::Shutdown::<T>::operator() (1.41%) 1872960
Uplifts and Backouts
Bug Component Summary
1657591 Security: PSM remember client auth decisions on a per-session basis
1824697 Widget: Win32 Crash in [@ nsObserverService::EnsureValidCall | nsObserverService::RemoveObserver | LocalesChangedObserver::Unregister]
1928382 Networking: Cache Crash in [@ mozilla::net::CacheFileMetadata::GetElement]
1938430 Tabbed Browser Record telemetry event when deleting a tab group
1947678 WebDriver BiDi "webExtenstion.install" should install web extensions temporary by default and allow a permanent installation as well.
1949912 Sidebar Create a Nimbus variable for controlling whether the sidebar is visible or hidden for horizontal tab users
1950468 Messaging System Tab Groups - New Trigger Request
1953015 Crash Reporting Perma Win MinGW ld.lld: error: undefined symbol: _ProcessPrng@8 | single tracking bug
1953857 Messaging System Add support for picker style tiles in the AboutWelcome MultiSelect component
1954990 Sidebar Having too many pinned tabs will reduce or hide the normal tabs area
1955265 Sidebar The option to hide sidebar tabs and sidebar is available to be used even if expand on hover is active
1956314 Tabbed Browser Container tabs hairline not visible in collapsed sidebar
1957305 Machine Learning [linkPreview] Use blocklist for AI generation
1957333 Netmonitor HTML preview of response is affected by the netmonitor's CSP
1957354 web-platform-tests Update web-platform-tests to 5903faa96e872e304d9c90b7c7bc98c3512fca99
1957434 Tabbed Browser Dragging tab to the end of the tab strip briefly animates it from the original position when dropping
1957554 Netmonitor Net monitor path column is not sortable
1957678 DOM: postMessage Checking for duplicates in the transferables list is quadratic
1957956 DOM: Core & HTML `preventDefault` behavior changed for radio inputs
1957998 Mach Core Running ./mach storybook no longer works
1958036 Audio/Video Regression in 1850615 breaks V4L2 h264 decoding
1958123 New Tab Page Add missing telemetry events to the new ads context menu
1958196 Startup and Profile System Visibility issues in profiles using the System theme after an OS theme change
1958862 Search [Trending Searches] Enable secret settings in beta and release
1956698 N/A N/A
1958411 N/A N/A
1958049 N/A N/A
  1. OOM | small (13.10%) Known top crash
  2. OOM | unknown | js::AutoEnterOOMUnsafeRegion::crash_impl | js::AutoEnterOOMUnsafeRegion::crash | js::gc::AllocateTenuredCellInGC (11.84%) Top crash 1472062
  3. OOM | unknown | js::AutoEnterOOMUnsafeRegion::crash_impl | mozilla::BitSet<T>::FindNext (3.22%) 1949316
  4. js::gc::detail::ChunkPtrHasStoreBuffer (2.59%) 1940438
  5. js::gc::HeaderWord::get (1.84%) 1948635
  6. ComObject<T>::Release (1.67%)
  7. mozilla::RestyleManager::ElementStateChanged (1.67%) 1936213
Uplifts and Backouts
Bug Component Summary
1947470 Panning and Zooming hdfcbank.com - When typing in the support chat, it gets scrolled to the top
1952563 PDF Viewer Blue 'Undo' button over blue snackbar background fails contrast
1954474 General [Dev Tools] Error: Protocol error (NS_ERROR_XPC_BAD_CONVERT_NATIVE); when opening the dev tools at https://openguessr.com/
1956330 Sidebar Extension sidebar panel broken after reopening the new sidebar while the extension panel was still the one selected
1957723 Tabbed Browser The index property is not respected when using tabs.create() inside a tab group
1957907 New Tab Page The Contextual menu button of the Billboard and Leaderboard banners doesn’t have a hover effect
1957924 Startup and Profile System Sync new profile group ID across profiles
1957950 Search Telemetry to Measure Suggestion Network Traffic Performance
1958192 Sidebar Attention dot is not visible while expanding the sidebar by hover
1958316 Messaging System Support setting a pref to a string of the current timestamp via Special Message Action
1958596 Widget: Gtk GTK tooltip background color applies wrongly when switching system dark/light color scheme with webextension theme
1958631 Widget: Win32 [windows] hover tooltips flicker in some cases
1958819 New Tab Page The “Manage more settings” link from the Customization Panel is not displayed in blue as expected
1958822 New Tab Page The custom wallpaper message is not blocked after interacting with it
1958907 Tabbed Browser Improve Precision for AI Tab Suggestions
1958972 Messaging System Add dismissable property configurable for infobars
1959251 Web Painting Firefox no longer responds to clicks in the HTML5 video player
1959402 Tabbed Browser Smart tab grouping suggested tabs don't suggest pages with same URL and text
1959438 Tabbed Browser Duplicating a tab just to the left of a tab group causes the tab to appear overtop of the tab label
1959683 Task Configuration periodic updates task hanging due to new search-config-icon files
1959827 Audio/Video: Playback Revert PlayReady CDM filtering back to an allow list by default (release only)
1915280 N/A N/A
1958259 N/A N/A
  1. mozilla::dom::ServiceWorkerRegistrar::GetShutdownPhase (24.32%) Top crash 1928888
  2. OOM | unknown | js::AutoEnterOOMUnsafeRegion::crash_impl | js::AutoEnterOOMUnsafeRegion::crash | js::gc::AllocateTenuredCellInGC (10.81%) Top crash 1472062
  3. AsyncShutdownTimeout | quit-application-granted | XPIProvider shutdown (5.41%)
  4. OOM | large | mozilla::JSHolderMap::Put (5.41%) 1892171
  5. OOM | unknown | js::AutoEnterOOMUnsafeRegion::crash_impl | mozilla::BitSet<T>::FindNext (5.41%) 1949316
  6. FindNextFileNameW (2.70%)
  7. OOM | large | alloc::raw_vec::handle_error (2.70%) 1906769
Uplifts and Backouts
Bug Component Summary
1885743 Audio/Video: Playback Crash in [@ mozilla::MFCDMSession::Create] with canalplus.com
1938425 Tabbed Browser Record telemetry event when reopening a saved tab group
1951249 Widget: Gtk [Gnome/Wayland][VSync] Painting stops every now and then on Linux
1957749 Security: Process Sandboxing SandboxBroker thread stack and TCB are leaked if the broker holds the last reference to itself
1957892 Widget: Gtk 26.06% glterrain (Linux) regression on Tue March 25 2025
1958510 New Tab Page The Wallpaper styles are not displayed in the Personalization Menu when enabling the “customWallpaper” feature configuration via Nimbus on the Stage server
1958817 New Tab Page The wallpaper styles from the Wallpaper section cannot be accessed using the keyboard navigation except the “Abstract” one
1959121 Sidebar [legacy sidebar] Sidebar does not remember last used if closed it with close x button
1959163 Search Update search-config-icons dumps
1959409 Graphics: Canvas2D CanvasRenderingContext2D forgets clip-path occasionally
1959492 Application Update Disable the "Bypassing Updates" feature
1959630 Widget: Gtk DBUS accent color only gets applied after a theme change.
1959815 Graphics: Canvas2D Last clearRect region is used when setting width and height
1959902 Sidebar The "x" (Close) button in the new sidebar cannot be reached when navigating with the keyboard in some panels
1959981 Tabbed Browser Perma Late Beta TEST-UNEXPECTED-FAIL | browser/components/tabbrowser/test/browser/tabs/browser_tab_groups_telemetry.js | Reopen group action is present in results - false == true - when Gecko 139 switches to Late Beta on 2025-05-09
1959367 N/A N/A
Uplifts and Backouts
Bug Component Summary
1938424 Tabbed Browser Record telemetry event when adding tabs to a tab group
1941491 Toolbars and Customization Intermittent browser/components/customizableui/test/marionette/test_assert_no_toolbar_changes.py | single tracking bug
1946738 PDF Viewer Enable signing in a PDF in Release
1959562 L10N Perma lint android-l10n /builds/worker/checkouts/gecko/mobile/android/android-components/components/compose/base/src/main/res/values-cy/strings.xml:0 | No matching license strings found in tools/lint/license/valid-licenses.txt (license)
1959713 General Implement tabs.Tab.groupId
1959714 General Implement tabs.group() and tabs.ungroup()
1959715 General Support groupId in tabs.query
1959716 General Implement groupId in tabs.onUpdated
1959730 Tabbed Browser TabMove event not dispatched for tabs when moving a group within the tab strip