Bug 303313

Summary:	[threaded-animations] many scroll-animations WPT tests involving programmatic scroll fail with "Threaded Scroll-driven Animations" enabled
Product:	WebKit	Reporter:	Antoine Quint <graouts>
Component:	Animations	Assignee:	Antoine Quint <graouts>
Status:	RESOLVED FIXED
Severity:	Normal	CC:	graouts, webkit-bug-importer
Priority:	P2	Keywords:	InRadar
Version:	WebKit Nightly Build
Hardware:	Unspecified
OS:	Unspecified

Antoine Quint

Reported 2025-12-01 05:43:29 PST

A lot of the scroll-animations WPT tests use programmatic scroll, setting `scrollTop` or `scrollLeft`, to test the rendering of elements targeted by scroll-driven animations. A fair few fail when "Threaded Scroll-driven Animations" is enabled.

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Radar WebKit Bug Importer

Comment 1 2025-12-01 05:43:39 PST

<rdar://problem/165614575>

Antoine Quint

Comment 2 2025-12-01 05:48:16 PST

Pull request: https://github.com/WebKit/WebKit/pull/54633

EWS

Comment 3 2025-12-02 22:08:39 PST

Committed 303810@main (858f6109867c): <https://commits.webkit.org/303810@main> Reviewed commits have been landed. Closing PR #54633 and removing active labels.

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