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This is for triage of the very latest bugs. Welcome to the firehose! This is an exciting group of bugs to look at. You really get your finger on the pulse of the Mozilla community.

The lists point to bugs filed in the last 24 hours. Usually this is around 400-500 bugs, but the number fluctuates over the course of the day. Many of them will really be support questions, or duplicate bugs.

Bugs Filed Today.


Full Query
ID Summary Product Component Status Op sys
1972186 Crash in [@ mfx_mft_h264ve_64.dll | <unknown in combase.pdb>] Core Audio/Video NEW Windows 10
1972187 Crash in [@ js::SinglyLinkedList<T>::popFront] Core JavaScript: GC NEW All
1972188 Crash in [@ xpc::XrayWrapper<T>::getPropertyKeys] Core JavaScript Engine NEW Windows
1972189 Intermittent browser/components/genai/tests/xpcshell/test_contextual_prompts.js | single tracking bug Core Machine Learning NEW Unspecified
1972190 Intermittent devtools/client/inspector/compatibility/test/browser/browser_compatibility_event_top-level-target-change.js | single tracking bug DevTools Inspector: Compatibility NEW Unspecified
1972192 Facebook videos can no longer be fast-forwarded while watching, and now YouTube too Core Audio/Video: Playback UNCONFIRMED Unspecified
1972193 [meta] Homepage Redesign 2025 Firefox for Android Homepage NEW Android
1972194 Calendar goes read only and hides when a reminder is double clicked Thunderbird Untriaged UNCONFIRMED Unspecified
1972195 Could `mozilla::webgpu::ExternalTextureDMABuf` use timeline semaphores? Core Graphics: WebGPU NEW Linux
1972196 Crash in [@ java.lang.IllegalArgumentException: at androidx.navigation.NavController.navigate(NavController.android.kt:23)] Firefox for Android Translations NEW Android
1972197 [wpt-sync] Sync PR 53141 - layout: Properly handle intrinsic min/max block sizes on replaced element Testing web-platform-tests NEW All
1972198 [wpt-sync] Sync PR 53147 - Fix Typos in Comments in serve.py and wave.py Testing web-platform-tests NEW All
1972199 Update web-platform-tests to e65ebae49248c8c7eabe571b7c50ad8dd216e24c Testing web-platform-tests NEW All
1972200 sound icon on list all tabs Firefox Tabbed Browser UNCONFIRMED Unspecified
1972201 Intermittent dom/base/test/test_find_bug1601118.html | single tracking bug Core DOM: Core & HTML NEW Unspecified
1972202 [wpt-sync] Sync PR 53037 - Remove @command in executorservodriver.py Testing web-platform-tests NEW All
1972203 [wpt-sync] Sync PR 53148 - Fix skipping CSP checks for styles when cloning nodes Testing web-platform-tests NEW All
1972204 [wpt-sync] Sync PR 53149 - Import invalid-media-query-list.html from WebKit layout tests Testing web-platform-tests NEW All
1972205 Intermittent /intersection-observer/scroll-margin-4-val.html | single tracking bug Core Layout NEW Unspecified
1972208 [wpt-sync] Sync PR 53121 - [SVG] Granular handling of mutations when attributes are changed on referenced svg element. Testing web-platform-tests NEW All
1972209 [wpt-sync] Sync PR 53125 - [menu]: Implement checkability and fieldset integration Testing web-platform-tests NEW All
1972210 Homepage Gif memory leaking Core Performance: Memory UNCONFIRMED Unspecified
1972211 [wpt-sync] Sync PR 53129 - Fix scrollbar background color ref discrepancy Testing web-platform-tests NEW All
1972212 [wpt-sync] Sync PR 53130 - Update tests for relaxed custom element names Testing web-platform-tests NEW All
1972213 [wpt-sync] Sync PR 53131 - compute pressure: Fix compute_pressure_duplicate_updates test Testing web-platform-tests NEW All
1972214 [wpt-sync] Sync PR 53132 - [replaced] Tentatively change our <video> behaviour. Testing web-platform-tests NEW All
1972215 [wpt-sync] Sync PR 53134 - Implement corner-{top|right|bottom|left}-shape shorthands Testing web-platform-tests NEW All
1972216 [wpt-sync] Sync PR 53135 - [Gap Decorations]: Add initial tests for subgrid support Testing web-platform-tests NEW All
1972217 [wpt-sync] Sync PR 53143 - [soft navs] LCP WPT -> LCP SoftNav WPT 2-3 (alphabetically) Testing web-platform-tests NEW All
1972218 [wpt-sync] Sync PR 53144 - WebNN: restrict `logicalAnd`, `logicalOr` and `logicalXor` input type Testing web-platform-tests NEW All
1972219 Intermittent docshell/test/navigation/test_ship_beforeunload_fired.html | single tracking bug Core DOM: Navigation RESOLVED Unspecified
1972220 Intermittent [tier 2] browser/components/aboutlogins/tests/browser/browser_openPreferences.js | single tracking bug Firefox about:logins NEW Unspecified
1972221 Startup crash [@ mozilla::dom::quota::QuotaManager::GetOriginStateMetadata ] Core Storage: Quota Manager ASSIGNED Unspecified
1972222 [wpt-sync] Sync PR 53156 - docs: recommend alternatives to timeouts and update reviewer checklist Testing web-platform-tests NEW All
1972223 Empty space in Firefox context menu WebExtensions Untriaged UNCONFIRMED Unspecified
1972224 Firefox does not load websites after updating Firefox Performance UNCONFIRMED Windows 10
1972226 Deceptive Firefox for Android Privacy UNCONFIRMED Android
1972227 New message window shade doesn't match theme Thunderbird Theme NEW Unspecified
1972228 Add some test coverage to keep data collection permissions in sync with gecko WebExtensions General NEW Unspecified
1972229 Intermittent /css/CSS2/backgrounds/background-bg-pos-206.xht | single tracking bug Core CSS Parsing and Computation NEW Unspecified
1972230 When using Chrome in FireFox, the search suggestions constantly change between Latvian and Finnish. Firefox for Android General UNCONFIRMED Unspecified
1972231 Crash in [@ mozilla::dom::NodeList_Binding::get_length] Core General NEW Windows 11
1972232 [wpt-sync] Sync PR 53158 - Git Testing web-platform-tests NEW All
1972233 Microtask queue is not drained between event handlers for `input` event Core DOM: Events NEW Unspecified
1972234 [wpt-sync] Sync PR 53159 - Create docker-image.yml Testing web-platform-tests NEW All
1972236 Perma [tier 2] raptor-browsertime Error: [custom-car] Browsertime failed to run | raptor-browsertime Critical: [custom-car] No data to collect Testing Raptor NEW Unspecified
1972237 Sidebar: Bottom sidebar buttons collapse to same line when sidebar is expanded on hover Firefox Sidebar UNCONFIRMED Unspecified
1972238 If you open a private window and close the main instance of Firefox, closing the private window erases all the previous active pages in the main instance. Firefox Private Browsing UNCONFIRMED Unspecified
1972239 How To Contribute Code To Firefox links to a 404 page Developer Infrastructure Firefox Source Docs: Content UNCONFIRMED Unspecified
1972240 Regression: unable to create a WebGL context from OffscreenCanvas in a Worker independent from main thread Core Graphics: CanvasWebGL NEW Unspecified
1972241 Signature missing from reply when using the big Reply button Thunderbird Mail Window Front End UNCONFIRMED Unspecified
1972242 Firefox keeps closing the first webpage i open from the URL searchbar. Core Widget: Win32 UNCONFIRMED Unspecified
1972243 [wpt-sync] Sync PR 53160 - Fix Typo in Comments for gitignore and serve Tools Testing web-platform-tests NEW All
1972245 Toolkit.Telemetry WARN UsageReporting::Unable to detect Windows Backup state: 0x80004005 (NS_ERROR_FAILURE) [nsIWindowsRegKey.readIntValue]" Firefox Shell Integration NEW Windows
1972246 clean profile startup error: addons.xpi WARN Force scan SCOPE_APPLICATION (app-builtin-addons location missing from XPIStates) Toolkit Add-ons Manager NEW Unspecified
1972247 Reenable ExoPlayer HLS tests for Fenix. GeckoView Media NEW Android
1972248 Add more debugging logs and check HW encoder limitations in MFTEncoder Core Audio/Video NEW Unspecified
1972249 Evaluate if we need to implement async callback mechanism to MFTEncoder Core Audio/Video NEW Unspecified
1972250 Crash in [@ nsTSubstring<T>::AssertValid | nsTSubstring<T>::SetData | nsTSubstring<T>::AssignOwned | nsTSubstring<T>::Assign | nsTSubstring<T>::Assign | nsTString<T>::nsTString] Core General NEW Windows

59 Total; 58 Open (98.31%); 1 Resolved (1.69%); 0 Verified (0%);



To work in this area, go through the bugs with status UNCONFIRMED.

    • Today's UNCO Bugs
    • If you can reproduce a bug, and are fairly sure it is a Mozilla bug, comment on the bug to explain how you reproduced the bug.
    • Include screenshots or a reduced test case, if they seem useful.
    • If you have canconfirm permissions, mark the bug NEW.
    • Assign the bug into a product and component, or tag it needs-component
    • Tag the bug with other triage tasks that may be needed.
    • If the bug is really a support question, please thank the bug reporter in a comment. Explain where the bug reporter should look for an answer.
      • Mark the bug RESOLVED INVALID if you have canconfirm permissions.