Bug 314141

Summary: REGRESSION(311971@main): [macOS iOS] imported/w3c/web-platform-tests/webvtt/rendering/cues-with-video/processing-model/selectors/cue/white-space_pre.html is a constant image failure.
Product: WebKit Reporter: Diego De La Toba <d_delatoba>
Component: New BugsAssignee: alan <zalan>
Status: RESOLVED FIXED    
Severity: Normal CC: webkit-bot-watchers-bugzilla, webkit-bug-importer, zalan
Priority: P2 Keywords: InRadar
Version: WebKit Nightly Build   
Hardware: Unspecified   
OS: Unspecified   
Attachments:
Description Flags
images
none
[fast-cq]Patch none

Diego De La Toba
Reported 2026-05-05 17:12:23 PDT
imported/w3c/web-platform-tests/webvtt/rendering/cues-with-video/processing-model/selectors/cue/white-space_pre.html is a constant image failure on macOS and iOS. HISTORY: https://results.webkit.org/?suite=layout-tests&test=imported%2Fw3c%2Fweb-platform-tests%2Fwebvtt%2Frendering%2Fcues-with-video%2Fprocessing-model%2Fselectors%2Fcue%2Fwhite-space_pre.html IMAGE DIFF: https://build.webkit.org/results/Apple-Tahoe-Release-AppleSilicon-WK2-Tests/312628@main%20(3676)/imported/w3c/web-platform-tests/webvtt/rendering/cues-with-video/processing-model/selectors/cue/white-space_pre-diffs.html IMAGES: See attached. REPRODUCTION: I was able to reproduce this on macOS 26.4 release ToT with the following: run-webkit-tests --no-build --no-retry --no-show-results --exit-after-n-failures=1 --expect-pass --iterations=5 --force --release imported/w3c/web-platform-tests/webvtt/rendering/cues-with-video/processing-model/selectors/cue/white-space_pre.htm I am going to mark expectations as imageOnlyFailure while this pends investigation.
Attachments
images (7.13 KB, application/zip)
2026-05-05 17:13 PDT, Diego De La Toba
no flags
[fast-cq]Patch (9.55 KB, patch)
2026-05-06 09:20 PDT, alan
no flags
Radar WebKit Bug Importer
Comment 1 2026-05-05 17:12:29 PDT
Diego De La Toba
Comment 2 2026-05-05 17:13:36 PDT
Diego De La Toba
Comment 3 2026-05-05 17:18:13 PDT
Test gardening pull request: https://github.com/WebKit/WebKit/pull/64316
EWS
Comment 4 2026-05-05 17:20:17 PDT
Test gardening commit 312653@main (9ac995afe0d4): <https://commits.webkit.org/312653@main> Reviewed commits have been landed. Closing PR #64316 and removing active labels.
alan
Comment 5 2026-05-06 09:20:46 PDT
Created attachment 479504 [details] [fast-cq]Patch
alan
Comment 6 2026-05-06 09:21:02 PDT
*** Bug 314197 has been marked as a duplicate of this bug. ***
EWS
Comment 7 2026-05-06 10:49:40 PDT
Committed 312717@main (4fe7edf44564): <https://commits.webkit.org/312717@main> All reviewed patches have been landed. Closing bug and clearing flags on attachment 479504 [details].
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