Bug 313486

Summary: Occasional flicker of bad layer offsets when positions are adjusted by scroll anchoring (or other programmatic scrolling)
Product: WebKit Reporter: Simon Fraser (smfr) <simon.fraser>
Component: ScrollingAssignee: Simon Fraser (smfr) <simon.fraser>
Status: RESOLVED FIXED    
Severity: Normal CC: simon.fraser, webkit-bug-importer
Priority: P2 Keywords: InRadar
Version: WebKit Nightly Build   
Hardware: Unspecified   
OS: Unspecified   
Attachments:
Description Flags
Test none

Simon Fraser (smfr)
Reported 2026-04-27 14:19:03 PDT
Created attachment 479344 [details] Test On a page which has frequent scroll anchoring adjustments, there can be a flicker of bad layer positions if an adjustment happens while wheel events are being processed, because of some kind of race commit layer positions.
Attachments
Test (16.83 KB, text/html)
2026-04-27 14:19 PDT, Simon Fraser (smfr) 		no flags
Details
View All Add attachment proposed patch, testcase, etc.
Radar WebKit Bug Importer
Comment 1 2026-04-27 14:19:10 PDT
<rdar://problem/175706332>
Simon Fraser (smfr)
Comment 2 2026-04-27 14:52:28 PDT
Pull request: https://github.com/WebKit/WebKit/pull/63745
Simon Fraser (smfr)
Comment 3 2026-04-28 13:06:57 PDT
<rdar://173456210>
EWS
Comment 4 2026-04-28 14:44:18 PDT
Committed 312233@main (80eaeca1f565): <https://commits.webkit.org/312233@main> Reviewed commits have been landed. Closing PR #63745 and removing active labels.
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