[Webkit-unassigned] [Bug 260546] New: REGRESSION:267076 at main [ macOS ] [ Debug ] imported/w3c/web-platform-tests/html/semantics/interactive-elements/the-details-element/toggleEvent.html is a flaky test failure

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=260546

            Bug ID: 260546
           Summary: REGRESSION:267076 at main [ macOS ] [ Debug ]
                    imported/w3c/web-platform-tests/html/semantics/interac
                    tive-elements/the-details-element/toggleEvent.html is
                    a flaky test failure
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: DOM
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: Dawn_Flores at apple.com

imported/w3c/web-platform-tests/html/semantics/interactive-elements/the-details-element/toggleEvent.html 
is a flaky text failure after 267076 at main where toggleEvent was enabled and the failure expectation was removed.
This failure is only on debug, and is nearly constant, but the flakes make rebaslining not the solution.

HISTORY:
https://results.webkit.org/?suite=layout-tests&test=imported%2Fw3c%2Fweb-platform-tests%2Fhtml%2Fsemantics%2Finteractive-elements%2Fthe-details-element%2FtoggleEvent.html&style=debug

DIFF:
--- /Volumes/Data/worker/Apple-Ventura-Debug-WK2-GPUProcess-Tests/build/layout-test-results/imported/w3c/web-platform-tests/html/semantics/interactive-elements/the-details-element/toggleEvent-expected.txt
+++ /Volumes/Data/worker/Apple-Ventura-Debug-WK2-GPUProcess-Tests/build/layout-test-results/imported/w3c/web-platform-tests/html/semantics/interactive-elements/the-details-element/toggleEvent-actual.txt
@@ -3,7 +3,7 @@
 PASS Removing open from 'details' should fire a toggle event at the 'details' element, with 'oldState: open' and 'newState: closed'
 PASS Adding open to 'details' (display:none) should fire a toggle event at the 'details' element, with 'oldState: closed' and 'newState: open'
 PASS Adding open to 'details' (no children) should fire a toggle event at the 'details' element, with 'oldState: closed' and 'newState: open'
-PASS Calling open twice on 'details' fires only one toggle event, with 'oldState: closed' and 'newState: open'
+FAIL Calling open twice on 'details' fires only one toggle event, with 'oldState: closed' and 'newState: open' assert_true: expected true got false
 PASS Calling setAttribute('open', '') from 'details' should fire a toggle event at the 'details' element, with 'oldState: closed' and 'newState: open'
 PASS Calling removeAttribute('open') from 'details' should fire a toggle event at the 'details' element, with 'oldState: open' and 'newState: closed'
 PASS Setting open=true to opened 'details' element should not fire a toggle event at the 'details' element

DIFF-URL:
https://build.webkit.org/results/Apple-Ventura-Debug-WK2-GPUProcess-Tests/267082@main%20(3372)/imported/w3c/web-platform-tests/html/semantics/interactive-elements/the-details-element/toggleEvent-diff.txt 

This is reproducible at TOT on a debug spade with: rwt --root [buildtoTest] imported/w3c/web-platform-tests/html/semantics/interactive-elements/the-details-element/toggleEvent.html --iterations 100

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