[Webkit-unassigned] [Bug 235123] New: REGRESSION(r286828?): [ Win EWS ] fast/css/contain-invalidate-if-disabled.html is a constant failure

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=235123

            Bug ID: 235123
           Summary: REGRESSION(r286828?): [ Win EWS ]
                    fast/css/contain-invalidate-if-disabled.html is a
                    constant failure
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: PC
                OS: Windows 10
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: CSS
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: Jenner at apple.com

fast/css/contain-invalidate-if-disabled.html

is a constant text failure on Windows. It is also slowing down Windows EWS. 

HISTORY:
https://results.webkit.org/?suite=layout-tests&test=fast%2Fcss%2Fcontain-invalidate-if-disabled.html&version_name=Win10

DIFF URL:
https://build.webkit.org/results/Apple-Win-10-Release-Tests/r287919%20(3970)/fast/css/contain-invalidate-if-disabled-pretty-diff.html

DIFF TEXT:
 On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".


-PASS 'contain' in document.documentElement.style is false
-PASS 'contain' in getComputedStyle(document.documentElement) is false
-PASS getComputedStyle(document.getElementById('target')).getPropertyValue('contain') == '' is true
-PASS CSS.supports('contain: paint') is false
-PASS CSS.supports('contain: inherit') is false
+FAIL 'contain' in document.documentElement.style should be false. Was true.
+FAIL 'contain' in getComputedStyle(document.documentElement) should be false. Was true.
+FAIL getComputedStyle(document.getElementById('target')).getPropertyValue('contain') == '' should be true. Was false.
+FAIL CSS.supports('contain: paint') should be false. Was true.
+FAIL CSS.supports('contain: inherit') should be false. Was true.
 PASS successfullyParsed is true
+Some tests failed.

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