Collects all issues mirrored from Sentry by the [Sentry Signal Loop](https://gitlab.com/gitlab-org/frontend/duo-sentry-insights) pipeline for `feature_category: source_code_management` (labels ~"Task Group::Sentry Signal Loop" + ~"group::source code hardening & modernization" ). # Fix MR Tally ## 🆕 New / reopened (no working fix yet) | Sentry issue | Error | Status | Events | Users | Events/day (7d avg) | |---|---|---|---:|---:|---:| | gitlab-org/gitlab#634372 | non-JSON response (`Rate limit`, 429 burst) | new 2026-10-17 | 436 | 251 | ~65 | | gitlab-org/gitlab#634373 | `fetch error` (no stacktrace, compare page) | new 2026-10-17 | 37 | 37 | ~10 | | gitlab-org/gitlab#634374 | `Worker` construct SecurityError (highlight worker, 2nd) | new 2026-10-17 | 13 | 13 | ~2 | | gitlab-org/gitlab#634375 | null `group` (pipeline mini-graph dropdown, Firefox) | new 2026-10-17 | 16 | 10 | ~2 | | gitlab-org/gitlab#633264 | custom element wrong document (Chromium, no stacktrace) | new 2026-10-10 | 32 | 28 | ~30 | | gitlab-org/gitlab#633265 | `Worker` construct SecurityError (highlight worker) | new 2026-10-10 | 10 | 10 | ~1 | | gitlab-org/gitlab#633267 | null `name` (pipeline mini-graph, 2nd) | new 2026-10-10 | 11 | 10 | ~5 | | gitlab-org/gitlab#629949 | assign to readonly property | no fix yet | 14 | 12 | ~12 | | gitlab-org/gitlab#629947 | `insertBefore` NotFoundError | no fix yet | 14 | 14 | ~4 | ## 🚧 In progress (fix MR open or awaiting rollout) | Sentry issue | Error | Fix MR(s) | MR state | Events | Users | Events/day (7d avg) | |---|---|---|---|---:|---:|---:| | gitlab-org/gitlab#633263 | custom element wrong document (Safari 27, diffs streaming) | gitlab-org/gitlab!261948 | open | 3,748 | 2,116 | ~2,980 | | gitlab-org/gitlab#631042 | null `name` (pipeline mini-graph) | gitlab-org/gitlab!259788 | draft | 25 | 13 | ~16 | ## ✅ Fixed (issue closed, fix merged) | Sentry issue | Error | Fix MR(s) | Events | Users | Events/day (7d avg) | |---|---|---|---:|---:|---:| | gitlab-org/gitlab#631039 | `Error in input stream` | gitlab-org/gitlab!259757 | 37 | 34 | ~26 | | gitlab-org/gitlab#632204 | undefined `updateSnippet` (snippets) | gitlab-org/gitlab!259768 | 13 | 12 | ~2 | | gitlab-org/gitlab#632200 | undefined `id` (new instance) | gitlab-org/gitlab!254565 (pre-existing fix; stale-bundle tail) | 60 | 53 | ~45 | | gitlab-org/gitlab#632201 | non-JSON response (`Unexpected token '<'`) | — closed as won't-do (crawler/legacy-browser noise) | 31 | 31 | ~1 | | gitlab-org/gitlab#632202 | `[...].at is not a function` (2nd) | — closed as won't-do (unsupported browsers) | 75 | 17 | ~95 | | gitlab-org/gitlab#632203 | undefined `length` | — closed as won't-do (unsupported browsers) | 76 | 16 | ~96 | | gitlab-org/gitlab#631041 | `[...].at is not a function` (tree list) | — closed as won't-do (unsupported browsers) | 22 | 14 | ~7 | | gitlab-org/gitlab#633266 | `[...].at is not a function` (3rd) | — closed as won't-do (unsupported browsers) | 12 | 10 | ~12 | | gitlab-org/gitlab#634376 | `[...].at is not a function` (file tree browser, 4th) | — closed as won't-do (unsupported browsers) | 32 | 10 | ~5 | | gitlab-org/gitlab#631043 | undefined `trees` | gitlab-org/gitlab!240953 (pre-existing guard; stale-bundle tail) | 9 | 8 | ~5 | | gitlab-org/gitlab#625057 | undefined `id` | gitlab-org/gitlab!254565 (covers 3 issues) | 36 | 31 | ~53 | | gitlab-org/gitlab#629442 | null `commitReferences` | gitlab-org/gitlab!256808 | 17 | 16 | ~22 | | gitlab-org/gitlab#629946 | undefined `endsWith` (highlight mixin) | gitlab-org/gitlab!256833 | 11 | 9 | ~17 | | gitlab-org/gitlab#625058 | perf mark `commit-list-fetching-data` | gitlab-org/gitlab!251215 | 8 | 8 | ~8 | | gitlab-org/gitlab#625062 | destructure `mergeRequests` of `{}` | gitlab-org/gitlab!254565 | 19 | 16 | ~25 | | gitlab-org/gitlab#625059 | undefined `renderError` (overflow menu) | gitlab-org/gitlab!252543 | 20 | 17 | ~33 | | gitlab-org/gitlab#631040 | `localStorage` access denied (SecurityError) | gitlab-org/gitlab!258232 | 53 | 14 | ~21 | | gitlab-org/gitlab#625054 | undefined `project` (blob viewer) | gitlab-org/gitlab!252566 | 114,415 | 110,907 | n/a | | gitlab-org/gitlab#625055 | undefined `fetchError` (EE BlobOverflowMenu) | gitlab-org/gitlab!252546 | 23,469 | 23,305 | ~9,622 | | gitlab-org/gitlab#625056 | Invalid language tag `en;q=0.9` | gitlab-org/gitlab!252545, gitlab-org/gitlab!256835 | 2,954 | 11 | ~1,696 | | gitlab-org/gitlab#601357 | [DEMO] Invalid time value (timeago) | gitlab-org/gitlab!255309 | 603 | 417 | ~974 | | gitlab-org/gitlab#625063 | undefined `addExtension` (shortcuts chunk) | gitlab-org/gitlab!256228 | 767 | 160 | ~482 | | gitlab-org/gitlab#625061 | destructure `mergeRequests` (dup) | gitlab-org/gitlab!254565 | 7 | 5 | ~4 | | gitlab-org/gitlab#625060 | AI Genie container not found | gitlab-org/gitlab!252550 | 2 | 2 | ~2 | | gitlab-org/gitlab#629950 | `t.at is not a function` | gitlab-org/gitlab!256837 | 15 | 12 | ~7 | | gitlab-org/gitlab#629441 | `insertBefore` (dup) | — closed as dup | 42 | 41 | ~6 | | gitlab-org/gitlab#629438 | invalid `querySelector` selector | gitlab-org/gitlab!258202 | 208 | 159 | ~99 | | gitlab-org/gitlab#629440 | `n.show is not a function` (tooltip/popover) | gitlab-org/gitlab-ui!6361, rollout gitlab-org/gitlab!256414 | 60 | 53 | ~13 | | gitlab-org/gitlab#629948 | undefined `includes` (router afterEach) | gitlab-org/gitlab!256834 | 14 | 14 | ~10 | | gitlab-org/gitlab#629439 | null `commitReferences` (dup) | gitlab-org/gitlab!256808 | 111 | 98 | n/a | ## Totals | Metric | Value | |---|---:| | Merged fix MRs | **20** (19 in gitlab + gitlab-org/gitlab-ui!6361, rolled out via gitlab-org/gitlab!256414) | | Open fix MRs | **2** (gitlab-org/gitlab!261948 open, gitlab-org/gitlab!259788 draft) | | **Total fix MRs since epic start** | **22** | | Issues in epic (incl. child epic) | 41 (11 open, 30 closed) | | Issues with no fix MR yet | 9 (4 new 2026-10-17 + 3 from 2026-10-10 + gitlab-org/gitlab#629949, gitlab-org/gitlab#629947) | | Total events (as reported) | ~147,500 | | Total users affected | ~138,000 | | Combined events/day (7d avg, where available) | ~16,500/day | ### Notes - The two biggest wins are merged: **gitlab-org/gitlab#625054 (~111k users)** and **gitlab-org/gitlab#625055 (~23k users)**, both blob-viewer Apollo guards. - gitlab-org/gitlab!254565 is one MR closing three issues; the gitlab-ui tooltip fix counts as one (its renovate rollout isn't counted separately). - Excluded as non-fixes: old "cause" MRs linked to issues, plus two unrelated artifacts on the [DEMO] issue. - User counts likely overlap across issues, so the total users figure is an upper bound. - The 2026-09 bot reopens of gitlab-org/gitlab#625059, gitlab-org/gitlab#625062, and gitlab-org/gitlab#629439 were spurious — recurring events came from releases predating the fixes; reopen gating fixed in gitlab-org/frontend/duo-sentry-insights!24. - The 2026-10-10 bot reopens of six fixed issues were spurious — rate-limited release lookups made the gate fail open; every post-close event traced to pre-fix releases. All six re-closed 2026-10-13 with per-issue evidence; gate hardened (retry + fail closed) in gitlab-org/frontend/duo-sentry-insights!26. - The 2026-10-17 bot reopens of four fixed issues were spurious too — the release gate reported "unavailable" and reopened on last_seen alone; Duo's post-reopen triage traced every 2026-10-16 event to a pre-fix release. All four re-closed 2026-10-17 with per-issue evidence. gitlab-org/gitlab#631043 turned out to have a pre-existing guard from gitlab-org/gitlab!240953 (not counted as an epic fix MR). - Several `.at()`/`length`-style issues were closed as won't-do: crawlers and browsers below the support baseline, archived in Sentry until escalation (see gitlab-org/gitlab#632202 discussion).