[Webkit-unassigned] [Bug 190910] New: [ MacOS WK1 ] Layout Test imported/blink/fast/multicol/composited- tests are flaky

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=190910

            Bug ID: 190910
           Summary: [ MacOS WK1 ] Layout Test
                    imported/blink/fast/multicol/composited- tests are
                    flaky
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Tools / Tests
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: tsavell at apple.com
                CC: lforschler at apple.com

The following layout test is flaky on MacOS WK1

imported/blink/fast/multicol/composited-relpos-simple.html
imported/blink/fast/multicol/composited-relpos-2nd-column.html
imported/blink/fast/multicol/composited-layer-single-fragment.html

Probable cause:

These three tests are failing together in the test runner. Something is setting a state to cause this failure. All the tests are failing to draw anything.

Flakiness Dashboard:

https://webkit-test-results.webkit.org/dashboards/flakiness_dashboard.html#showAllRuns=true&tests=imported%2Fblink%2Ffast%2Fmulticol%2Fcomposited-relpos-simple.html%20imported%2Fblink%2Ffast%2Fmulticol%2Fcomposited-relpos-2nd-column.html%20imported%2Fblink%2Ffast%2Fmulticol%2Fcomposited-layer-single-fragment.html

Diff:
https://build.webkit.org/results/Apple%20Mojave%20Release%20WK1%20(Tests)/r237417%20(499)/imported/blink/fast/multicol/composited-layer-single-fragment-diffs.html
https://build.webkit.org/results/Apple%20Mojave%20Release%20WK1%20(Tests)/r237417%20(499)/imported/blink/fast/multicol/composited-relpos-2nd-column-diffs.html
https://build.webkit.org/results/Apple%20Mojave%20Release%20WK1%20(Tests)/r237417%20(499)/imported/blink/fast/multicol/composited-relpos-simple-diffs.html

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