bugzilla-data-high.json

{"bugs":[{"component":"Password Manager","summary":"Browser UI hang in sqlite3PagerSharedLock during LoginManagerCrypto decryption (via sqlite usage during NSC_DecryptInit for SDR crypto)","keywords":[],"last_change_time":"2026-03-07T06:21:30Z","status":"ASSIGNED","creation_time":"2025-05-01T13:52:50Z","priority":"--","severity":"--","id":1963814,"op_sys":"All"},{"id":1602842,"severity":"S3","priority":"P3","op_sys":"Unspecified","keywords":["perf:responsiveness"],"summary":"OSXDisplay::EnableVsync hangs in CVDisplayLinkCreateWithActiveCGDisplays","component":"Widget: Cocoa","creation_time":"2019-12-10T17:22:25Z","status":"NEW","last_change_time":"2025-07-01T19:28:26Z"},{"keywords":["perf:responsiveness"],"summary":"SendReceiveMouseInputEvent often blocks the main thread of the parent process","component":"Panning and Zooming","creation_time":"2020-11-16T15:30:13Z","status":"NEW","last_change_time":"2025-05-28T19:20:30Z","id":1677509,"severity":"S3","priority":"--","op_sys":"Unspecified"},{"op_sys":"Windows","priority":"--","severity":"S3","id":1688951,"last_change_time":"2026-02-28T12:23:08Z","creation_time":"2021-01-26T19:14:50Z","status":"NEW","component":"Layout: Text and Fonts","summary":"Lazy font loading can still hang the main thread on Windows","keywords":["perf:responsiveness"]},{"keywords":["meta"],"summary":"[Meta] investigate performance issues on Reddit.","component":"Performance: General","status":"NEW","creation_time":"2021-01-28T16:03:57Z","last_change_time":"2025-03-11T08:41:57Z","severity":"--","id":1689392,"priority":"--","op_sys":"Unspecified"},{"last_change_time":"2025-11-26T06:43:39Z","creation_time":"2022-05-25T16:56:04Z","status":"NEW","summary":"AudioContext power optimizations","keywords":["perf:resource-use","reproducible"],"component":"Web Audio","op_sys":"Unspecified","severity":"S3","id":1771179,"priority":"P2"},{"component":"Performance","keywords":["perf:resource-use","perf:responsiveness","reproducible"],"summary":"Fenix hangs and memory usage jumps on theguardian.com when opening headlines in new tab","status":"NEW","creation_time":"2022-08-31T21:19:22Z","last_change_time":"2025-03-10T23:42:15Z","priority":"P2","severity":"S2","id":1788530,"op_sys":"Unspecified"},{"last_change_time":"2025-10-30T20:58:10Z","status":"NEW","creation_time":"2023-04-05T14:45:37Z","component":"Graphics: WebRender","summary":"CSS filter() with invert() and hue-rotate() results in sluggish scrolling on Wikipedia","keywords":["webcompat:platform-bug"],"op_sys":"Android","priority":"--","id":1826576,"severity":"S3"},{"creation_time":"2023-08-18T17:52:57Z","status":"NEW","last_change_time":"2026-03-10T16:53:28Z","keywords":["perf","perf:responsiveness"],"summary":"Firefox regularly hangs for over half a second in SessionWriter.sys.mjs calling IOUtils.writeJSON serializing a massive JS object when saving tab state","component":"Session Restore","op_sys":"Unspecified","id":1849393,"severity":"S3","priority":"P3"},{"op_sys":"Unspecified","priority":"P2","id":1903530,"severity":"S2","creation_time":"2024-06-19T11:50:31Z","status":"NEW","last_change_time":"2026-04-15T14:32:25Z","component":"Storage: Quota Manager","keywords":[],"summary":"Frequent long janks on Android on loading certain pages"},{"last_change_time":"2025-03-20T03:11:36Z","status":"NEW","creation_time":"2024-11-04T09:34:27Z","summary":"vizzy.io - The browser is slowed down and eventually stops responding","keywords":["webcompat:needs-contact","webcompat:site-report"],"component":"Site Reports","op_sys":"Windows 10","severity":"S2","id":1928948,"priority":"P2"},{"last_change_time":"2026-02-25T19:39:41Z","creation_time":"2025-04-30T12:23:32Z","status":"NEW","component":"JavaScript Engine","summary":"ChatGPT on clean Firefox install - \"This page is slowing down Firefox.\"","keywords":[],"op_sys":"Unspecified","priority":"P1","severity":"S2","id":1963578},{"op_sys":"Android","id":1971873,"severity":"S3","priority":"P3","last_change_time":"2025-07-04T18:23:19Z","status":"NEW","creation_time":"2025-06-12T19:54:27Z","summary":"m.facebook.com live site loads 100-200ms slower in Fenix than Chrome","keywords":["perf:pageload"],"component":"Performance: Navigation"},{"op_sys":"Android","severity":"S2","id":1988762,"priority":"P2","last_change_time":"2026-03-23T19:01:32Z","status":"NEW","creation_time":"2025-09-16T14:51:59Z","summary":"Slow scrolling performance on particular sites (mastodon)","keywords":[],"component":"Graphics: WebRender"},{"component":"Performance Engineering","keywords":[],"summary":"Fenix cold start applink navigation performance ~800-1100ms slower than warm, hot scenarios, p75 (fcp, lcp)","status":"NEW","creation_time":"2025-10-22T15:48:12Z","last_change_time":"2026-04-29T17:39:53Z","priority":"P3","severity":"S2","id":1995805,"op_sys":"Unspecified"},{"severity":"S3","id":2012760,"priority":"P3","op_sys":"Unspecified","keywords":["leave-open","webcompat:platform-bug","webcompat:site-report","webcompat:sitepatch-applied"],"summary":"Jank and freezing on snowplowmap.a2gov.org","component":"Site Reports","creation_time":"2026-01-27T17:26:37Z","status":"NEW","last_change_time":"2026-05-13T14:31:19Z"},{"severity":"S2","id":2026885,"priority":"P1","op_sys":"Windows 10","keywords":["webcompat:needs-diagnosis","webcompat:site-report"],"summary":"ome.tv - Page freezes shortly after matching with users","component":"JavaScript: WebAssembly","status":"NEW","creation_time":"2026-03-27T08:26:43Z","last_change_time":"2026-05-11T16:32:18Z"},{"priority":"--","severity":"S3","id":1550754,"op_sys":"Unspecified","component":"Crash Reporting","keywords":["perf:responsiveness","perf:startup","reproducible"],"summary":"ContentParent::KillHard janks the main thread","status":"REOPENED","creation_time":"2019-05-10T14:52:25Z","last_change_time":"2026-04-28T09:36:23Z"}]}