RESOLVED FIXED 287950
[scroll-animations] view timeline with its subject inside a shadow root cannot be referenced out of the shadow root 
https://bugs.webkit.org/show_bug.cgi?id=287950
Summary [scroll-animations] view timeline with its subject inside a shadow root canno...
Antoine Quint
Reported 2025-02-19 03:56:02 PST
The demo at https://codepen.io/t_afif/full/ZEgjNxm creates a view timeline with the subject being one of the parts inside a <progress> element's shadow root. That view timeline is then referenced using `animation-timeline` outside of that <progress> element's shadow root. That works fine in Chrome but fails in WebKit. This blocks bug 284540.
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Add attachment proposed patch, testcase, etc.
Antoine Quint
Comment 1 2025-02-19 03:59:42 PST
Pull request: https://github.com/WebKit/WebKit/pull/40844
Antoine Quint
Comment 2 2025-02-19 04:04:55 PST
Submitted web-platform-tests pull request: https://github.com/web-platform-tests/wpt/pull/50798
EWS
Comment 3 2025-02-20 01:09:36 PST
Committed 290695@main (00baf1bf9de2): <https://commits.webkit.org/290695@main> Reviewed commits have been landed. Closing PR #40844 and removing active labels.
Radar WebKit Bug Importer
Comment 4 2025-02-20 01:10:15 PST
<rdar://problem/145201641>
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