Bug 305959

Summary: [IOS MacOS] fast/text/FontFaceSet-status-after-style-update.html is a flakey text failure.
Product: WebKit Reporter: Diego De La Toba <d_delatoba>
Component: New BugsAssignee: 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 2026-01-21 11:52:42 PST
fast/text/FontFaceSet-status-after-style-update.html is a flakey text failure only on MacOS and IOS. HISTORY: https://results.webkit.org/?suite=layout-tests&test=fast%2Ftext%2FFontFaceSet-status-after-style-update.html is a flakey text failure. Appears to start at 305367@main. TEXT DIFF: --- /Volumes/Data/worker/Apple-Tahoe-Release-AppleSilicon-WK2-Tests/build/layout-test-results/fast/text/FontFaceSet-status-after-style-update-expected.txt +++ /Volumes/Data/worker/Apple-Tahoe-Release-AppleSilicon-WK2-Tests/build/layout-test-results/fast/text/FontFaceSet-status-after-style-update-actual.txt @@ -7,8 +7,9 @@ Loading font PASS fonts.status is "loading" Deleting style -PASS fonts.status is "loaded" +FAIL fonts.status should be loaded. Was loading. PASS successfullyParsed is true +Some tests failed. TEST COMPLETE TEXT URL: https://build.webkit.org/results/Apple-Tahoe-Release-AppleSilicon-WK2-Tests/305943@main%20(1221)/fast/text/FontFaceSet-status-after-style-update-pretty-diff.html STEPS TO REPRODUCE: I was able to reproduce this failure at macOS Tahoe ToT and IOS 26 ToT running the test as follows: run-webkit-tests --release --no-retry --force --iterations 2000 fast/text/FontFaceSet-status-after-style-update.html run-webkit-tests --ios-simulator --release --child-process=1 --iterations 1000 fast/text/FontFaceSet-status-after-style-update.html Failures seem to only occur under high CPU load.
Attachments
Radar WebKit Bug Importer
Comment 1 2026-01-21 11:52:48 PST
Diego De La Toba
Comment 2 2026-01-21 13:27:37 PST
I am going to mark expectations for this test as a pass failure while it is under investigation.
Diego De La Toba
Comment 3 2026-01-21 13:29:31 PST
EWS
Comment 4 2026-01-21 14:05:41 PST
Test gardening commit 305965@main (5678d9314956): <https://commits.webkit.org/305965@main> Reviewed commits have been landed. Closing PR #56990 and removing active labels.
Diego De La Toba
Comment 5 2026-01-21 14:58:24 PST
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