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fix(core): mount one widget per id in WidgetManager - #11064
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chrisgervang wants to merge 3 commits into
Open
chrisgervang wants to merge 3 commits into
chrisgervang wants to merge 3 commits into
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`_setWidgets` marks an id as matched by setting it to `null`, but then treated `null` like a missing entry. A second widget with the same id was mounted as new, and on the next update the first one was no longer in the id map, so it was never removed. Each update with a duplicate id leaked another widget into the DOM. Warn with "Multiple widgets with same id", as LayerManager does for layers, and keep the first widget with each id. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01LGNhMnSJ94uYgx7ihcVwPn
 [Low impact] The PR appears safe to merge, with the previous test cleanup issue fixed. Summary
Reviews (3) · Last reviewed commit: "test(core): restore log.warn when the du..." · Reviewed by Greptile |
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The headless suite runs without isolation, so a failed assertion would leave `log.warn` muted for the tests that follow. Restore it in `finally`. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01LGNhMnSJ94uYgx7ihcVwPn
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coverage: 84.706%. remained the same — chr/widget-manager-duplicate-ids into master |
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Closes #11066
Background
_setWidgetstreats thenull"already matched" marker the same as a missing id, so a second widget with the same id is mounted. Updates after that leak one more widget each. This PR handlesnullthe wayLayerManagerdoes: it warns and keeps the first widget with each id.Change List
WidgetManager: warn "Multiple widgets with same id", keep the firstVerified with the core and widgets headless suites (340 tests) and
yarn lint.🤖 Generated with Claude Code
https://claude.ai/code/session_01LGNhMnSJ94uYgx7ihcVwPn
Note
Low Risk
Low risk bug fix that avoids duplicate widget mounting and DOM element leaks without changing standard widget reconciliation.
Overview
Prevents
WidgetManagerfrom mounting duplicate widgets that share the same ID during widget reconciliation. When an ID has already been matched in the current update cycle (oldWidget === null),WidgetManagernow logs a warning and skips subsequent widgets with that ID rather than treating them as new widgets and leaking DOM elements.Reviewed by Cursor Bugbot for commit 4d4ae77. Bugbot is set up for automated code reviews on this repo. Configure here.