[Webkit-unassigned] [Bug 206680] New: [ macOS ] fast/frames/sandboxed-iframe-navigation-allowed.html is flaky failing

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=206680

            Bug ID: 206680
           Summary: [ macOS ]
                    fast/frames/sandboxed-iframe-navigation-allowed.html
                    is flaky failing
           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: jacob_uphoff at apple.com

fast/frames/sandboxed-iframe-navigation-allowed.html is flaky failing on Catalina and Mojave wk1

I did not try to reproduce

History:
https://results.webkit.org/?suite=layout-tests&test=fast%2Fframes%2Fsandboxed-iframe-navigation-allowed.html

Diff:

--- /Volumes/Data/slave/mojave-release-tests-wk1/build/layout-test-results/fast/frames/sandboxed-iframe-navigation-allowed-expected.txt
+++ /Volumes/Data/slave/mojave-release-tests-wk1/build/layout-test-results/fast/frames/sandboxed-iframe-navigation-allowed-actual.txt
@@ -4,7 +4,7 @@


 PASS (self.sandboxedFrame.frameWithPlugin.document.getElementById('plugin').destroyStream) == undefined is true
-PASS (self.frameWithPlugin.document.getElementById('plugin').destroyStream) != undefined is true
+FAIL (self.frameWithPlugin.document.getElementById('plugin').destroyStream) != undefined should be true. Threw exception TypeError: null is not an object (evaluating 'self.frameWithPlugin.document.getElementById('plugin').destroyStream')
 PASS String(document.getElementById('sandboxedFrameId').sandbox) is "allow-scripts allow-same-origin"
 PASS successfullyParsed is true

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