312499 2026-04-16 11:48:20 -0700 [macOS iOS] imported/w3c/web-platform-tests/shadow-dom/reference-target/tentative/form.html is a flaky text failure. 2026-04-16 12:01:36 -0700 1 1 1 Unclassified WebKit New Bugs WebKit Nightly Build Unspecified Unspecified NEW InRadar P2 Normal --- 1 d_delatoba webkit-unassigned webkit-bot-watchers-bugzilla webkit-bug-importer oldest_to_newest 2201157 0 d_delatoba 2026-04-16 11:48:20 -0700 imported/w3c/web-platform-tests/shadow-dom/reference-target/tentative/form.html is a flaky text failure on macOS and iOS. HISTORY: https://results.webkit.org/?suite=layout-tests&test=imported%2Fw3c%2Fweb-platform-tests%2Fshadow-dom%2Freference-target%2Ftentative%2Fform.html DIFF: --- /Volumes/Data/worker/Apple-Tahoe-Release-AppleSilicon-WK2-Tests/build/layout-test-results/imported/w3c/web-platform-tests/shadow-dom/reference-target/tentative/form-expected.txt +++ /Volumes/Data/worker/Apple-Tahoe-Release-AppleSilicon-WK2-Tests/build/layout-test-results/imported/w3c/web-platform-tests/shadow-dom/reference-target/tentative/form-actual.txt @@ -5,7 +5,7 @@ PASS Reference target works with setAttribute('form') FAIL Reference target works with form-associated custom element. realForm.moveBefore is not a function. (In 'realForm.moveBefore(customElementInShadow, input)', 'realForm.moveBefore' is undefined) FAIL Reference target works with nested shadow trees. assert_equals: The .elements property should have 3 elements. expected 3 but got 2 -FAIL Form association is updated when form is inserted in or removed from shadow DOM, including in nested shadow DOM assert_equals: The first element should be the reset button outside the shadow root. expected Element node <button id="reset-button-6" type="reset" form="fancy-form... but got Element node <input id="input-in-shadow" value="default value" form="r... +FAIL Form association is updated when form is inserted in or removed from shadow DOM, including in nested shadow DOM assert_equals: The reset button should show the shadow host as its form property. expected Element node <fancy-form-6 id="fancy-form-6"></fancy-form-6> but got null FAIL Form association works for image inputs, which aren't in the elements collection assert_equals: expected Element node <fancy-form-7 id="fancy-form-7"> </fancy-form-7> but got null DIFF URL: https://build.webkit.org/results/Apple-Tahoe-Release-AppleSilicon-WK2-Tests/311376@main%20(3306)/imported/w3c/web-platform-tests/shadow-dom/reference-target/tentative/form-pretty-diff.html REPRODUCTION: I was able to reproduce this on macOS and iOS 26.4 with the following: run-webkit-tests --no-build --no-retry --no-show-results --exit-after-n-failures=1 --expect-pass --iterations=50 --force --ios-simulator --release imported/w3c/web-platform-tests/shadow-dom/reference-target/tentative/form.html I am going to mark expectations as pass fail while this pends investigation. 2201158 1 webkit-bug-importer 2026-04-16 11:48:27 -0700 <rdar://problem/174939846> 2201162 2 d_delatoba 2026-04-16 11:58:34 -0700 Test gardening pull request: https://github.com/WebKit/WebKit/pull/62912 2201165 3 ews-feeder 2026-04-16 12:01:36 -0700 Test gardening commit 311394@main (871735e3600c): <https://commits.webkit.org/311394@main> Reviewed commits have been landed. Closing PR #62912 and removing active labels.