Clear whole list node stack when leaving its root parent#3357
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JiuqingSong wants to merge 1 commit into
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Clear whole list node stack when leaving its root parent#3357JiuqingSong wants to merge 1 commit into
JiuqingSong wants to merge 1 commit into
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When handleBlockGroupChildren finishes processing a block group whose list node stack is rooted at the parent being left, clear the entire node stack instead of only its inner levels so a sibling block group does not incorrectly reuse the invalidated list element. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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Summary
Fixes an issue where the model-to-DOM list node stack could be incorrectly reused across sibling block groups.
When
handleBlockGroupChildrenfinishes processing a block group whose list node stack is rooted at the parent node being left (nodeStack[0].node === parent), the whole node stack is now cleared instead of only its inner levels. This prevents a subsequent sibling block group from reusing the now-invalidated list element.Changes
cleanUpNodeStacknow takes an optionalleavingParentargument. When it is the root of the node stack, the entire stack is popped.handleBlockGroupChildrenpasses theparentnode asleavingParentin the end-of-loop cleanup.Tests
Added two unit tests to
handleBlockGroupChildrenTest.ts:Both pass; the new behavior test fails against the previous code, confirming it guards the fix.
Original bug
https://outlookweb.visualstudio.com/Outlook%20Web/_workitems/edit/422204
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