[Webkit-unassigned] [Bug 193116] New: [ Mojave WK1 ] Layout Test fast/sub-pixel/simple-clipping.html and fast/sub-pixel/sub-pixel-composited-layers.html is flaky

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=193116

            Bug ID: 193116
           Summary: [ Mojave WK1 ] Layout Test
                    fast/sub-pixel/simple-clipping.html and
                    fast/sub-pixel/sub-pixel-composited-layers.html is
                    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 Mojave WK1

fast/sub-pixel/simple-clipping.html
fast/sub-pixel/sub-pixel-composited-layers.html

Probable cause:

These two tests are failing images in tandem and are failing due to the resulting images being zoomed in on. relating this to https://bugs.webkit.org/show_bug.cgi?id=193112

Flakiness Dashboard:

https://webkit-test-results.webkit.org/dashboards/flakiness_dashboard.html#showAllRuns=true&tests=fast%2Fsub-pixel%2Fsimple-clipping.html%20fast%2Fsub-pixel%2Fsub-pixel-composited-layers.html

Image Diffs:

https://build.webkit.org/results/Apple%20Mojave%20Release%20WK1%20(Tests)/r239596%20(1914)/fast/sub-pixel/simple-clipping-diffs.html
https://build.webkit.org/results/Apple%20Mojave%20Release%20WK1%20(Tests)/r239596%20(1914)/fast/sub-pixel/sub-pixel-composited-layers-diffs.html

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