NEW306821
[Tahoe]fast/css-grid-layout/grid-item-display.html is a flaky text failure. 
https://bugs.webkit.org/show_bug.cgi?id=306821
Summary [Tahoe]fast/css-grid-layout/grid-item-display.html is a flaky text failure.
Diego De La Toba
Reported 2026-02-02 18:04:48 PST
fast/css-grid-layout/grid-item-display.html is a flaky text failure affecting MacOS Tahoe across all architectures. HISTORY: https://results.webkit.org/?suite=layout-tests&test=fast%2Fcss-grid-layout%2Fgrid-item-display.html DIFF: --- /Volumes/Data/worker/Apple-Tahoe-Release-AppleSilicon-WK2-Tests/build/layout-test-results/fast/css-grid-layout/grid-item-display-expected.txt +++ /Volumes/Data/worker/Apple-Tahoe-Release-AppleSilicon-WK2-Tests/build/layout-test-results/fast/css-grid-layout/grid-item-display-actual.txt @@ -1,47 +1,8 @@ This test checks that the grid items' 'display' computed value matches the specification. It also checks that the grid items are placed in the right grid area. -PASS -PASS -PASS -PASS -PASS -PASS -PASS -PASS -PASS -PASS -PASS -PASS -PASS -PASS -PASS -PASS -PASS -PASS +object -PASS -PASS -object -PASS -PASS -PASS - -PASS - -PASS - -PASS - -PASS - -PASS - -PASS - -PASS -PASS -PASS DIFF URL: https://build.webkit.org/results/Apple-Tahoe-Release-AppleSilicon-WK2-Tests/306658@main%20(1401)/fast/css-grid-layout/grid-item-display-pretty-diff.html REPRODUCTION: Reproduced on macOS Tahoe Tot with the following: run-webkit-tests --release --force --no-retry --iterations 100 ifast/css-grid-layout/grid-item-display.html I am going to mark expectations as pass fail while this pends investigation.
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Radar WebKit Bug Importer
Comment 1 2026-02-02 18:04:57 PST
<rdar://problem/169492659>
Diego De La Toba
Comment 2 2026-02-02 18:09:53 PST
Pull request: https://github.com/WebKit/WebKit/pull/57743
EWS
Comment 3 2026-02-02 18:14:42 PST
Test gardening commit 306671@main (e37df12c4478): <https://commits.webkit.org/306671@main> Reviewed commits have been landed. Closing PR #57743 and removing active labels.
Diego De La Toba
Comment 4 2026-02-02 18:31:17 PST
This is a potential test race condition between the <body onload="checkLayout('.grid > *')"> event handler and the test runner determining the test is complete and dumping the output. This is why "object" is shown in the output sometimes.
Diego De La Toba
Comment 5 2026-02-02 18:37:28 PST
Pull request: https://github.com/WebKit/WebKit/pull/57746
Diego De La Toba
Comment 6 2026-02-02 18:39:02 PST
(In reply to Diego De La Toba from comment #5) > Pull request: https://github.com/WebKit/WebKit/pull/57746 This patch resolves the issue. Please review.
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