Bug 306652

Summary:	[threaded-animations] WPT test `scroll-animations/view-timelines/timeline-offset-in-keyframe.html` crashes with "Threaded Time-based 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 2026-01-30 14:06:40 PST

The WPT test `scroll-animations/view-timelines/timeline-offset-in-keyframe.html` crashes with "Threaded Time-based Animations" enabled. This is due to failing `ASSERT(!std::isnan(srcKeyframe.offset()))` in the `AcceleratedEffect` constructor.

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Radar WebKit Bug Importer

Comment 1 2026-01-30 14:06:52 PST

<rdar://problem/169304641>

Antoine Quint

Comment 2 2026-01-30 14:14:49 PST

Pull request: https://github.com/WebKit/WebKit/pull/57586

EWS

Comment 3 2026-01-30 23:40:41 PST

Committed 306553@main (9b966716d8fa): <https://commits.webkit.org/306553@main> Reviewed commits have been landed. Closing PR #57586 and removing active labels.

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