[Webkit-unassigned] [Bug 259458] New: REGRESSION(265781 at main?): [ WK1 Ventura E gpuprocess Debug x86_64 ] fast/events/wheel/redispatched-wheel-event.html is a consistent failure

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=259458

            Bug ID: 259458
           Summary: REGRESSION(265781 at main?): [ WK1 Ventura E gpuprocess
                    Debug x86_64 ]
                    fast/events/wheel/redispatched-wheel-event.html is a
                    consistent failure
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Scrolling
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: ben_schwartz at apple.com
                CC: simon.fraser at apple.com,
                    webkit-bot-watchers-bugzilla at group.apple.com,
                    webkit-bug-importer at group.apple.com

fast/events/wheel/redispatched-wheel-event.html

This test is a consistent failure on macOS Ventura E gpuprocess Debug x86_64, WebKit 1.

HISTORY:

https://results.webkit.org/?suite=layout-tests&test=fast%2Fevents%2Fwheel%2Fredispatched-wheel-event.html

TEXT DIFF:

 PASS windowScrollEventCount is 0
 PASS overflowScrollEventCount is 0
 PASS windowScrollEventCount is 0
-PASS overflowScrollEventCount >= expectedMinOverflowScrollEventCount is true
+FAIL overflowScrollEventCount >= expectedMinOverflowScrollEventCount should be true. Was false.
 PASS successfullyParsed is true

 TEST COMPLETE

DIFF URL:

https://build.webkit.org/results/Apple-Monterey-Debug-AppleSilicon-WK2-Tests/266257@main%20(6317)/fast/events/wheel/redispatched-wheel-event-pretty-diff.html

REGRESSION:

I was able to reproduce this bug on the reported platform running the test as follows:

run-webkit-tests -1 --debug --use-gpu-process --accelerated-drawing fast/events/wheel/redispatched-wheel-event.html

I was able to bisect a possible regression point using the flakiness dashboard (265781 at main). In my attempts to reproduce the issue on multiple platforms, DumpRenderTree kept crashing on WebKit 1, which caused the test to fail at all tested commits. The changes at 265781 at main appear to be directly related to the failing test, which is likely contributing to the failure; however, this may indicate a larger issue with DumpRenderTree.

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