[Webkit-unassigned] [Bug 210350] New: REGRESSION: (r259850?)[ Mac wk1 Debug ] media/track/track-user-stylesheet.html is flaky failing.

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=210350

            Bug ID: 210350
           Summary: REGRESSION: (r259850?)[ Mac wk1 Debug ]
                    media/track/track-user-stylesheet.html is flaky
                    failing.
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Macintosh
                OS: macOS 10.15
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Media
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: Lawrence.j at apple.com

media/track/track-user-stylesheet.html

Description:
This test is flaky failing on Mac wk1 Debug. The test appears to have regressed on r259850.

History:
https://results.webkit.org/?suite=layout-tests&test=media%2Ftrack%2Ftrack-user-stylesheet.html&flavor=wk1&platform=mac&style=debug

Diff:
--- /Volumes/Data/slave/mojave-debug-tests-wk1/build/layout-test-results/media/track/track-user-stylesheet-expected.txt
+++ /Volumes/Data/slave/mojave-debug-tests-wk1/build/layout-test-results/media/track/track-user-stylesheet-actual.txt
@@ -11,9 +11,9 @@
 EVENT(seeked)

 ** Track should be visible, cue should be styled appropriately. **
-EXPECTED (video.textTracks[0].mode == 'showing') OK
-EXPECTED (getComputedStyle(textTrackDisplayElement(video, 'cue')).color == 'rgb(0, 0, 255)') OK
-EXPECTED (getComputedStyle(textTrackDisplayElement(video, 'cue')).backgroundColor == 'rgb(255, 255, 0)') OK
+EXPECTED (video.textTracks[0].mode == 'showing'), OBSERVED 'disabled' FAIL
+No text track cue with display id 'cue' is currently visible
+No text track cue with display id 'cue' is currently visible

 ** Remove the video from the document, add it back. **
 RUN(video.parentNode.removeChild(video))

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