RESOLVED FIXED287239
[scroll-animations] CSS Animations with an `animation-timeline` matching a `timeline-scope` should default to an inactive scroll timeline 
https://bugs.webkit.org/show_bug.cgi?id=287239
Summary [scroll-animations] CSS Animations with an `animation-timeline` matching a `t...
Antoine Quint
Reported 2025-02-07 05:31:46 PST
Our code currently treats `animation-timeline` values that don't match an in-scope `scroll-timeline-name` as a null timeline, but the Scroll-driven Animations specification says that those should be inactive scroll timelines (timelines without a source) at https://drafts.csswg.org/scroll-animations-1/#valdef-timeline-scope-dashed-ident.
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Antoine Quint
Comment 1 2025-02-07 05:41:31 PST
Pull request: https://github.com/WebKit/WebKit/pull/40209
Antoine Quint
Comment 2 2025-02-07 05:41:55 PST
Submitted web-platform-tests pull request: https://github.com/web-platform-tests/wpt/pull/50560
EWS
Comment 3 2025-02-07 23:25:44 PST
Committed 290082@main (d46cee42c3f4): <https://commits.webkit.org/290082@main> Reviewed commits have been landed. Closing PR #40209 and removing active labels.
Radar WebKit Bug Importer
Comment 4 2025-02-07 23:26:14 PST
<rdar://problem/144432693>
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