-{"bugs":[{"status":"ASSIGNED","component":"Networking: HTTP","keywords":["leave-open","perf:responsiveness","reproducible","top50","webcompat:platform-bug"],"summary":"H3 upload Speed still slow. Three times slower than other browsers.","severity":"S2","op_sys":"Unspecified","creation_time":"2023-09-13T10:36:04Z","last_change_time":"2025-09-22T17:43:02Z","id":1852924,"priority":"P1"},{"creation_time":"2025-05-01T13:52:50Z","op_sys":"All","severity":"--","summary":"Browser UI hang in sqlite3PagerSharedLock during LoginManagerCrypto decryption (via sqlite usage during NSC_DecryptInit for SDR crypto)","keywords":[],"component":"Password Manager","status":"ASSIGNED","priority":"--","id":1963814,"last_change_time":"2025-07-03T16:42:57Z"},{"priority":"P3","last_change_time":"2025-07-01T19:28:26Z","id":1602842,"op_sys":"Unspecified","creation_time":"2019-12-10T17:22:25Z","summary":"OSXDisplay::EnableVsync hangs in CVDisplayLinkCreateWithActiveCGDisplays","severity":"S3","status":"NEW","component":"Widget: Cocoa","keywords":["perf:responsiveness"]},{"priority":"--","last_change_time":"2025-05-28T19:20:30Z","id":1677509,"op_sys":"Unspecified","creation_time":"2020-11-16T15:30:13Z","summary":"SendReceiveMouseInputEvent often blocks the main thread of the parent process","severity":"S3","status":"NEW","keywords":["perf:responsiveness"],"component":"Panning and Zooming"},{"component":"Layout: Text and Fonts","keywords":["perf:responsiveness"],"status":"NEW","op_sys":"Windows","creation_time":"2021-01-26T19:14:50Z","severity":"S3","summary":"Lazy font loading can still hang the main thread on Windows","id":1688951,"last_change_time":"2025-08-22T20:22:21Z","priority":"--"},{"op_sys":"Unspecified","creation_time":"2021-01-28T16:03:57Z","summary":"[Meta] investigate performance issues on Reddit.","severity":"--","keywords":["meta"],"component":"Performance: General","status":"NEW","priority":"--","id":1689392,"last_change_time":"2025-03-11T08:41:57Z"},{"creation_time":"2022-05-25T16:56:04Z","op_sys":"Unspecified","summary":"AudioContext power optimizations","severity":"S3","status":"NEW","component":"Web Audio","keywords":["perf:resource-use","reproducible"],"priority":"P2","last_change_time":"2025-11-26T06:43:39Z","id":1771179},{"status":"NEW","keywords":["perf:resource-use","perf:responsiveness","reproducible"],"component":"Performance","op_sys":"Unspecified","creation_time":"2022-08-31T21:19:22Z","summary":"Fenix hangs and memory usage jumps on theguardian.com when opening headlines in new tab","severity":"S2","last_change_time":"2025-03-10T23:42:15Z","id":1788530,"priority":"P2"},{"priority":"--","id":1826576,"last_change_time":"2025-10-30T20:58:10Z","severity":"S3","summary":"CSS filter() with invert() and hue-rotate() results in sluggish scrolling on Wikipedia","creation_time":"2023-04-05T14:45:37Z","op_sys":"Android","component":"Graphics: WebRender","keywords":["webcompat:platform-bug"],"status":"NEW"},{"status":"NEW","component":"Session Restore","keywords":["perf","perf:responsiveness"],"severity":"S3","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","op_sys":"Unspecified","creation_time":"2023-08-18T17:52:57Z","last_change_time":"2025-10-13T08:56:16Z","id":1849393,"priority":"P3"},{"priority":"P2","last_change_time":"2025-11-05T15:23:53Z","id":1903530,"creation_time":"2024-06-19T11:50:31Z","op_sys":"Unspecified","severity":"S2","summary":"Frequent long janks on Android on loading certain pages","status":"NEW","component":"Storage: Quota Manager","keywords":[]},{"severity":"S2","summary":"vizzy.io - The browser is slowed down and eventually stops responding","creation_time":"2024-11-04T09:34:27Z","op_sys":"Windows 10","status":"NEW","component":"Site Reports","keywords":["webcompat:needs-contact","webcompat:site-report"],"priority":"P2","last_change_time":"2025-03-20T03:11:36Z","id":1928948},{"id":1963578,"last_change_time":"2025-12-04T10:31:23Z","priority":"P1","keywords":[],"component":"JavaScript Engine","status":"NEW","op_sys":"Unspecified","creation_time":"2025-04-30T12:23:32Z","severity":"S2","summary":"ChatGPT on clean Firefox install - \"This page is slowing down Firefox.\""},{"priority":"P3","last_change_time":"2025-07-04T18:23:19Z","id":1971873,"creation_time":"2025-06-12T19:54:27Z","op_sys":"Android","severity":"S3","summary":"m.facebook.com live site loads 100-200ms slower in Fenix than Chrome","status":"NEW","component":"Performance: Navigation","keywords":["perf:pageload"]},{"status":"NEW","keywords":[],"component":"Performance Engineering","severity":"S2","summary":"Fenix cold start applink navigation performance ~1500ms slower than warm, hot scenarios, p75","creation_time":"2025-10-22T15:48:12Z","op_sys":"Unspecified","last_change_time":"2025-11-19T22:29:16Z","id":1995805,"priority":"P3"},{"priority":"--","last_change_time":"2025-07-01T14:09:09Z","id":1550754,"op_sys":"Unspecified","creation_time":"2019-05-10T14:52:25Z","summary":"ContentParent::KillHard janks the main thread","severity":"S3","status":"REOPENED","component":"Crash Reporting","keywords":["perf:responsiveness","perf:startup","reproducible"]}]}
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