Bug 308845

Summary: [MacOS debug] fast/scrolling/latching/scroll-div-no-latching.html is a flaky text failure.
Product: WebKit Reporter: Diego De La Toba <d_delatoba>
Component: New BugsAssignee: Diego De La Toba <d_delatoba>
Status: RESOLVED FIXED    
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 2026-02-27 12:45:18 PST
fast/scrolling/latching/scroll-div-no-latching.html is a flaky text failure on macOS debug arm64, failures appear as far back as test was introduced. HISTORY: https://results.webkit.org/?suite=layout-tests&test=fast%2Fscrolling%2Flatching%2Fscroll-div-no-latching.html&version_name=Sequoia&version_name=Tahoe&style=debug&recent=false DIFF: --- /Volumes/Data/worker/Apple-Tahoe-Debug-AppleSilicon-WK2-Tests/build/layout-test-results/fast/scrolling/latching/scroll-div-no-latching-expected.txt +++ /Volumes/Data/worker/Apple-Tahoe-Debug-AppleSilicon-WK2-Tests/build/layout-test-results/fast/scrolling/latching/scroll-div-no-latching-actual.txt @@ -4,7 +4,7 @@ On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE". -PASS Page received wheel events. +FAIL Page did not receive wheel events. PASS successfullyParsed is true TEST COMPLETE DIFF URL: https://build.webkit.org/results/Apple-Tahoe-Debug-AppleSilicon-WK2-Tests/308348%40main%20(1059)/fast/scrolling/latching/scroll-div-no-latching-pretty-diff.html REPRODUCTION: Reproduced on macOS 26.2 on arm64 debug TOT with the following: run-webkit-tests --no-build --no-retry --no-show-results --exit-after-n-failures=1 --expect-pass --iterations=1000 --force -f --debug fast/scrolling/latching/scroll-div-no-latching.html I am going to mark expectations as pass fail while this pends investigation.
Attachments
Radar WebKit Bug Importer
Comment 1 2026-02-27 12:45:24 PST
Diego De La Toba
Comment 2 2026-02-27 12:47:36 PST
EWS
Comment 3 2026-02-27 12:49:31 PST
Test gardening commit 308363@main (fe12fd5f6b5f): <https://commits.webkit.org/308363@main> Reviewed commits have been landed. Closing PR #59606 and removing active labels.
Diego De La Toba
Comment 4 2026-02-27 13:12:09 PST
Diego De La Toba
Comment 5 2026-02-27 13:13:09 PST
It appears this test is flaky due to insufficient waiting for scroll completion. I put up a pr that resolves this. Please review.
EWS
Comment 6 2026-03-04 14:56:06 PST
Committed 308665@main (24d3f7388768): <https://commits.webkit.org/308665@main> Reviewed commits have been landed. Closing PR #59608 and removing active labels.
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