Bug 315337

Summary: [Sequoia x86_64] 3 imported/w3c/web-platform-tests/css/ tests are a constant IMAGE failure
Product: WebKit Reporter: Karl Rackler <rackler>
Component: CSSAssignee: Antti Koivisto <koivisto>
Status: NEW    
Severity: Normal CC: koivisto, webkit-bot-watchers-bugzilla, webkit-bug-importer
Priority: P2 Keywords: InRadar
Version: WebKit Nightly Build   
Hardware: Unspecified   
OS: Unspecified   
Attachments:
Description Flags
Image: new-content-root-scrollbar-with-fixed-background-diff.png
none
Image: new-content-root-scrollbar-with-fixed-background-actual.png
none
Image: old-content-root-scrollbar-with-fixed-background-diff.png
none
Image: old-content-root-scrollbar-with-fixed-background-actual.png
none
Image: root-element-with-opacity-filter-001-diff.png
none
Image: root-element-with-opacity-filter-001-actual.png none

Karl Rackler
Reported 2026-05-21 20:13:14 PDT
Description: imported/w3c/web-platform-tests/css/css-view-transitions/new-content-root-scrollbar-with-fixed-background.html imported/w3c/web-platform-tests/css/css-view-transitions/old-content-root-scrollbar-with-fixed-background.html imported/w3c/web-platform-tests/css/filter-effects/root-element-with-opacity-filter-001.html 3 imported/w3c/web-platform-tests/css/ tests are a constant IMAGE failure on mac Sequoia x86_64 since bringup. The tests fail on the earliest available Sequoia build through the current build. This issue can be reproduced using the command: run-webkit-tests --no-build --no-retry --no-show-results --exit-after-n-failures=1 --expect-pass --iterations=1000 --force --debug imported/w3c/web-platform-tests/css/css-view-transitions/new-content-root-scrollbar-with-fixed-background.html ------------- BISECTION AUDIT TRAIL ------------- 301693@main, 63514c0fa1d5 --> IMAGE 301693@main, 63514c0fa1d5 --> IMAGE 303028@main, 6faf9b8eb8d6 --> IMAGE 304383@main, 9b056b76f1ac --> IMAGE 305556@main, 87471e70b9f0 --> CRASH 307101@main, 74b7e9ca0925 --> IMAGE 308376@main, 1a56b9edb929 --> IMAGE 309652@main, 0d0b427573f9 --> IMAGE 311058@main, 5902aac80217 --> IMAGE 312451@main, ae796c10f6c5 --> IMAGE 313677@main, 0ae4298637da --> IMAGE 313684@main, fa7002860636 --> IMAGE ------------- BISECTION AUDIT TRAIL END ------------- History: https://results.webkit.org/?version_name=Sequoia&suite=layout-tests&test=imported%2Fw3c%2Fweb-platform-tests%2Fcss%2Fcss-view-transitions%2Fnew-content-root-scrollbar-with-fixed-background.html Diff: [Image diff - see attachment] Test Run: https://build.webkit.org/#/builders/1228/builds/3469 03:53:20.565 42004 worker/8 imported/w3c/web-platform-tests/css/css-view-transitions/new-content-root-scrollbar-with-fixed-background.html allowed fuzziness {'max_difference': [0, 2], 'total_pixels': [0, 4737]}, actual difference {'max_difference': 2, 'total_pixels': 4745}: pass False 03:53:20.568 42004 [57074/91288] imported/w3c/web-platform-tests/css/css-view-transitions/new-content-root-scrollbar-with-fixed-background.html failed unexpectedly (reference mismatch maxDifference=2; totalPixels=4745) 03:53:20.569 42004 worker/8 imported/w3c/web-platform-tests/css/css-view-transitions/new-content-root-scrollbar-with-fixed-background.html failed:
Attachments
Image: new-content-root-scrollbar-with-fixed-background-diff.png (7.72 KB, image/png)
2026-05-21 20:13 PDT, Karl Rackler
no flags
Image: new-content-root-scrollbar-with-fixed-background-actual.png (21.39 KB, image/png)
2026-05-21 20:13 PDT, Karl Rackler
no flags
Image: old-content-root-scrollbar-with-fixed-background-diff.png (7.72 KB, image/png)
2026-05-21 20:24 PDT, Karl Rackler
no flags
Image: old-content-root-scrollbar-with-fixed-background-actual.png (21.39 KB, image/png)
2026-05-21 20:24 PDT, Karl Rackler
no flags
Image: root-element-with-opacity-filter-001-diff.png (2.88 KB, image/png)
2026-05-21 20:24 PDT, Karl Rackler
no flags
Image: root-element-with-opacity-filter-001-actual.png (16.44 KB, image/png)
2026-05-21 20:24 PDT, Karl Rackler
no flags
Karl Rackler
Comment 1 2026-05-21 20:13:15 PDT
Created attachment 479767 [details] Image: new-content-root-scrollbar-with-fixed-background-diff.png
Karl Rackler
Comment 2 2026-05-21 20:13:15 PDT
Created attachment 479768 [details] Image: new-content-root-scrollbar-with-fixed-background-actual.png
Radar WebKit Bug Importer
Comment 3 2026-05-21 20:13:21 PDT
Radar WebKit Bug Importer
Comment 4 2026-05-21 20:13:21 PDT
Karl Rackler
Comment 5 2026-05-21 20:24:05 PDT
Created attachment 479769 [details] Image: old-content-root-scrollbar-with-fixed-background-diff.png
Karl Rackler
Comment 6 2026-05-21 20:24:06 PDT
Created attachment 479770 [details] Image: old-content-root-scrollbar-with-fixed-background-actual.png
Karl Rackler
Comment 7 2026-05-21 20:24:07 PDT
Created attachment 479771 [details] Image: root-element-with-opacity-filter-001-diff.png
Karl Rackler
Comment 8 2026-05-21 20:24:08 PDT
Created attachment 479772 [details] Image: root-element-with-opacity-filter-001-actual.png
Karl Rackler
Comment 9 2026-05-21 20:24:09 PDT
Test Run: https://build.webkit.org/#/builders/1228/builds/3469 imported/w3c/web-platform-tests/css/css-view-transitions/old-content-root-scrollbar-with-fixed-background.html 03:53:53.053 42004 worker/8 imported/w3c/web-platform-tests/css/css-view-transitions/old-content-root-scrollbar-with-fixed-background.html allowed fuzziness {'max_difference': [0, 2], 'total_pixels': [0, 4737]}, actual difference {'max_difference': 2, 'total_pixels': 4745}: pass False 03:53:53.057 42004 [57428/91288] imported/w3c/web-platform-tests/css/css-view-transitions/old-content-root-scrollbar-with-fixed-background.html failed unexpectedly (reference mismatch maxDifference=2; totalPixels=4745) 03:53:53.057 42004 worker/8 imported/w3c/web-platform-tests/css/css-view-transitions/old-content-root-scrollbar-with-fixed-background.html failed: imported/w3c/web-platform-tests/css/filter-effects/root-element-with-opacity-filter-001.html 03:56:03.019 42004 [58750/91288] imported/w3c/web-platform-tests/css/filter-effects/root-element-with-opacity-filter-001.html failed unexpectedly (reference mismatch maxDifference=1; totalPixels=294) 03:56:03.019 42004 worker/5 imported/w3c/web-platform-tests/css/filter-effects/root-element-with-opacity-filter-001.html failed:
EWS
Comment 10 2026-05-21 20:34:18 PDT
Test gardening commit 313702@main (91392dacdb40): <https://commits.webkit.org/313702@main> Reviewed commits have been landed. Closing PR #65455 and removing active labels.
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