Bug 311100

Summary: Scrubbing a YouTube video in full-screen causes it to exit full-screen mode.
Product: WebKit Reporter: Jean-Yves Avenard [:jya] <jean-yves.avenard>
Component: MediaAssignee: Jean-Yves Avenard [:jya] <jean-yves.avenard>
Status: RESOLVED FIXED    
Severity: Normal CC: webkit-bug-importer
Priority: P2 Keywords: InRadar
Version: WebKit Nightly Build   
Hardware: Unspecified   
OS: Unspecified   

Jean-Yves Avenard [:jya]
Reported 2026-03-30 05:17:49 PDT
1. Launch Safari 2. Navigate to YouTube.com 3. Start watching any video 4. Put the video into full screen 5. Drag the slider on the timeline forward or backwards 6. Repeat Results: Video eventually exits full-screen mode. Another, often easier to reproduce: https://jyavenard.github.io/htmltests/tests/elementFullscreenMSE.html start playing, seek toward 8s, rewind the playback slider slowly and continuously toward the start of the video. A decoding error will occur.
Attachments
Jean-Yves Avenard [:jya]
Comment 1 2026-03-30 05:18:00 PDT
Jean-Yves Avenard [:jya]
Comment 2 2026-03-30 06:36:23 PDT
EWS
Comment 3 2026-04-01 21:03:39 PDT
Committed 310415@main (2fcceeb9c6b0): <https://commits.webkit.org/310415@main> Reviewed commits have been landed. Closing PR #61694 and removing active labels.
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