Bug 306278

Summary: [ MacOS arm ] media/media-source/media-managedmse-resume-after-remove.html is a flaky test failure.
Product: WebKit Reporter: Diego De La Toba <d_delatoba>
Component: MediaAssignee: Nobody <webkit-unassigned>
Status: NEW    
Severity: Normal CC: webkit-bot-watchers-bugzilla, webkit-bug-importer
Priority: P2 Keywords: InRadar
Version: WebKit Nightly Build   
Hardware: Unspecified   
OS: Unspecified   

Diego De La Toba
Reported 2026-01-26 09:38:28 PST
media/media-source/media-managedmse-resume-after-remove.html is a flaky text failure on MacOS Sequoia+ arm. Found failures as far back as the test was introduced. TEXT DIFF: --- /Volumes/Data/worker/Apple-Tahoe-Release-AppleSilicon-WK2-Tests/build/layout-test-results/media/media-source/media-managedmse-resume-after-remove-expected.txt +++ /Volumes/Data/worker/Apple-Tahoe-Release-AppleSilicon-WK2-Tests/build/layout-test-results/media/media-source/media-managedmse-resume-after-remove-actual.txt @@ -17,7 +17,7 @@ EVENT(waiting) EXPECTED (video.currentTime >= '1.5') OK EXPECTED (video.readyState == '1') OK -EXPECTED (video.currentTime == currentTime == 'true') OK +EXPECTED (video.currentTime == currentTime == 'true'), OBSERVED 'false' FAIL EXPECTED (video.readyState == '1') OK RUN(sourceBuffer.appendBuffer(loader.mediaSegment(0))) EVENT(update) TEXT URL: https://build.webkit.org/results/Apple-Tahoe-Release-AppleSilicon-WK2-Tests/306203@main%20(1288)/media/media-source/media-managedmse-resume-after-remove-pretty-diff.html STEPS TO REPRODUCE: I was able to reproduce this on MacOS ToT with the following: run-webkit-test s--no-retry --force --iterations 2000 media/media-source/media-managedmse-resume-after-remove.html
Attachments
Radar WebKit Bug Importer
Comment 1 2026-01-26 09:38:35 PST
Diego De La Toba
Comment 2 2026-01-26 10:08:40 PST
Regression appears to start at 303527@main. I am going to mark expectations as pass/fail while this pends investigation.
Diego De La Toba
Comment 3 2026-01-26 10:18:35 PST
EWS
Comment 4 2026-01-26 11:47:59 PST
Test gardening commit 306229@main (6a8e7f9444c6): <https://commits.webkit.org/306229@main> Reviewed commits have been landed. Closing PR #57267 and removing active labels.
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