[Webkit-unassigned] [Bug 206624] New: REGRESSION: [ Mac ] legacy-animation-engine/fast/animation/request-animation-frame-iframe2.html is a flaky failure

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=206624

            Bug ID: 206624
           Summary: REGRESSION: [ Mac ]
                    legacy-animation-engine/fast/animation/request-animati
                    on-frame-iframe2.html is a flaky failure
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Animations
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: jacob_uphoff at apple.com
                CC: dino at apple.com

legacy-animation-engine/fast/animation/request-animation-frame-iframe2.html

This is a flakey failure that appears to have started before commit 253106, however because it is so flakey I am not sure when exactly the regression could have been entered in.
I did not try to reproduce the failure, the failures have become more frequent.

History: 
https://results.webkit.org/?suite=layout-tests&test=legacy-animation-engine%2Ffast%2Fanimation%2Frequest-animation-frame-iframe2.html

Diff:

 --- /Volumes/Data/slave/mojave-debug-tests-wk1/build/layout-test-results/legacy-animation-engine/fast/animation/request-animation-frame-iframe2-expected.txt
+++ /Volumes/Data/slave/mojave-debug-tests-wk1/build/layout-test-results/legacy-animation-engine/fast/animation/request-animation-frame-iframe2-actual.txt
@@ -3,7 +3,7 @@
 On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".


-PASS callbackInvoked is true
+FAIL callbackInvoked should be true. Was false.
 PASS mainFrameCallbackInvoked is true
 PASS successfullyParsed is true

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