bugzilla-data-high.json

{"bugs":[{"severity":"--","op_sys":"All","last_change_time":"2026-03-07T06:21:30Z","summary":"Browser UI hang in sqlite3PagerSharedLock during LoginManagerCrypto decryption (via sqlite usage during NSC_DecryptInit for SDR crypto)","status":"ASSIGNED","creation_time":"2025-05-01T13:52:50Z","component":"Password Manager","id":1963814,"keywords":[],"priority":"--"},{"op_sys":"Unspecified","severity":"S3","summary":"OSXDisplay::EnableVsync hangs in CVDisplayLinkCreateWithActiveCGDisplays","last_change_time":"2025-07-01T19:28:26Z","component":"Widget: Cocoa","creation_time":"2019-12-10T17:22:25Z","priority":"P3","id":1602842,"keywords":["perf:responsiveness"],"status":"NEW"},{"op_sys":"Unspecified","severity":"S3","summary":"SendReceiveMouseInputEvent often blocks the main thread of the parent process","last_change_time":"2025-05-28T19:20:30Z","keywords":["perf:responsiveness"],"priority":"--","id":1677509,"component":"Panning and Zooming","creation_time":"2020-11-16T15:30:13Z","status":"NEW"},{"status":"NEW","id":1688951,"priority":"--","keywords":["perf:responsiveness"],"component":"Layout: Text and Fonts","creation_time":"2021-01-26T19:14:50Z","last_change_time":"2026-02-28T12:23:08Z","summary":"Lazy font loading can still hang the main thread on Windows","severity":"S3","op_sys":"Windows"},{"last_change_time":"2025-03-11T08:41:57Z","summary":"[Meta] investigate performance issues on Reddit.","status":"NEW","creation_time":"2021-01-28T16:03:57Z","component":"Performance: General","id":1689392,"keywords":["meta"],"priority":"--","severity":"--","op_sys":"Unspecified"},{"summary":"AudioContext power optimizations","last_change_time":"2025-11-26T06:43:39Z","keywords":["perf:resource-use","reproducible"],"priority":"P2","id":1771179,"component":"Web Audio","creation_time":"2022-05-25T16:56:04Z","status":"NEW","op_sys":"Unspecified","severity":"S3"},{"status":"NEW","id":1788530,"priority":"P2","keywords":["perf:resource-use","perf:responsiveness","reproducible"],"component":"Performance","creation_time":"2022-08-31T21:19:22Z","last_change_time":"2025-03-10T23:42:15Z","summary":"Fenix hangs and memory usage jumps on theguardian.com when opening headlines in new tab","severity":"S2","op_sys":"Unspecified"},{"status":"NEW","creation_time":"2023-04-05T14:45:37Z","component":"Graphics: WebRender","priority":"--","id":1826576,"keywords":["webcompat:platform-bug"],"last_change_time":"2025-10-30T20:58:10Z","summary":"CSS filter() with invert() and hue-rotate() results in sluggish scrolling on Wikipedia","severity":"S3","op_sys":"Android"},{"status":"NEW","component":"Session Restore","creation_time":"2023-08-18T17:52:57Z","keywords":["perf","perf:responsiveness"],"id":1849393,"priority":"P3","last_change_time":"2026-03-10T16:53:28Z","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","severity":"S3","op_sys":"Unspecified"},{"summary":"Frequent long janks on Android on loading certain pages","last_change_time":"2026-04-15T14:32:25Z","id":1903530,"priority":"P2","keywords":[],"component":"Storage: Quota Manager","creation_time":"2024-06-19T11:50:31Z","status":"NEW","op_sys":"Unspecified","severity":"S2"},{"severity":"S2","op_sys":"Windows 10","status":"NEW","component":"Site Reports","creation_time":"2024-11-04T09:34:27Z","id":1928948,"priority":"P2","keywords":["webcompat:needs-contact","webcompat:site-report"],"last_change_time":"2025-03-20T03:11:36Z","summary":"vizzy.io - The browser is slowed down and eventually stops responding"},{"component":"JavaScript Engine","creation_time":"2025-04-30T12:23:32Z","keywords":[],"id":1963578,"priority":"P1","status":"NEW","summary":"ChatGPT on clean Firefox install - \"This page is slowing down Firefox.\"","last_change_time":"2026-02-25T19:39:41Z","op_sys":"Unspecified","severity":"S2"},{"status":"NEW","creation_time":"2025-06-12T19:54:27Z","component":"Performance: Navigation","priority":"P3","id":1971873,"keywords":["perf:pageload"],"last_change_time":"2025-07-04T18:23:19Z","summary":"m.facebook.com live site loads 100-200ms slower in Fenix than Chrome","severity":"S3","op_sys":"Android"},{"op_sys":"Android","severity":"S2","summary":"Slow scrolling performance on particular sites (mastodon)","last_change_time":"2026-03-23T19:01:32Z","creation_time":"2025-09-16T14:51:59Z","component":"Graphics: WebRender","id":1988762,"priority":"P2","keywords":[],"status":"NEW"},{"severity":"S2","op_sys":"Unspecified","status":"NEW","creation_time":"2025-10-22T15:48:12Z","component":"Performance Engineering","keywords":[],"id":1995805,"priority":"P3","last_change_time":"2026-04-29T17:39:53Z","summary":"Fenix cold start applink navigation performance ~800-1100ms slower than warm, hot scenarios, p75 (fcp, lcp)"},{"op_sys":"Unspecified","severity":"S3","component":"Site Reports","creation_time":"2026-01-27T17:26:37Z","keywords":["webcompat:needs-sitepatch","webcompat:platform-bug","webcompat:site-report"],"priority":"P3","id":2012760,"status":"NEW","summary":"Jank and freezing on snowplowmap.a2gov.org","last_change_time":"2026-03-31T12:19:33Z"},{"op_sys":"Windows 10","severity":"S2","summary":"ome.tv - Page freezes shortly after matching with users","last_change_time":"2026-05-05T16:10:25Z","component":"JavaScript: WebAssembly","creation_time":"2026-03-27T08:26:43Z","priority":"P1","id":2026885,"keywords":["webcompat:needs-diagnosis","webcompat:site-report"],"status":"NEW"},{"summary":"ContentParent::KillHard janks the main thread","last_change_time":"2026-04-28T09:36:23Z","component":"Crash Reporting","creation_time":"2019-05-10T14:52:25Z","id":1550754,"keywords":["perf:responsiveness","perf:startup","reproducible"],"priority":"--","status":"REOPENED","op_sys":"Unspecified","severity":"S3"}]}