[Webkit-unassigned] [Bug 232040] Regression(r284516) : [ iOS macOS wk2 ] webanimations/marker-opacity-animation-no-effect.html is a flaky image failure

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=232040

ayumi_kojima at apple.com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |don.olmstead at sony.com
            Summary|[ iOS macOS wk2             |Regression(r284516) : [ iOS
                   |]webanimations/marker-opaci |macOS wk2 ]
                   |ty-animation-no-effect.html |webanimations/marker-opacit
                   |is a flaky image failure    |y-animation-no-effect.html
                   |                            |is a flaky image failure

--- Comment #4 from ayumi_kojima at apple.com ---
I was able to reproduce the image failure locally using run-webkit-tests --force --iterations 500 --exit-after-n-failures 1 webanimations/marker-opacity-animation-no-effect.html

The test passed with r284515 (though this revision failed on the testing bot) and failed with r284516. 

It looks like https://trac.webkit.org/changeset/284516/webkit caused the flaky image failure, but not sure since I think it is very strange that r284515 failed on the testing bot, but didn't fail locally (iterated 1000 times, but passed.)

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