[Webkit-unassigned] [Bug 173379] New: Layout test fast/text/system-font-fallback-emoji.html is failing

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=173379

            Bug ID: 173379
           Summary: Layout test fast/text/system-font-fallback-emoji.html
                    is failing
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: New Bugs
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: jlewis3 at apple.com

fast/text/system-font-fallback-emoji.html is failing consistently

According to the flakiness dashboard, it is failing on all Mac and windows WK1 and El Capitan Wk2.
https://webkit-test-results.webkit.org/dashboards/flakiness_dashboard.html#showAllRuns=true&tests=fast%2Ftext%2Fsystem-font-fallback-emoji.html

The issue seems to have started when revision r217955 https://trac.webkit.org/changeset/217955/webkit was added.

https://build.webkit.org/results/Apple%20Sierra%20Release%20WK1%20(Tests)/r218268%20(2458)/results.html
https://build.webkit.org/builders/Apple%20Sierra%20Release%20WK1%20(Tests)/builds/2458

diff
--- /Volumes/Data/slave/sierra-release-tests-wk1/build/layout-test-results/fast/text/system-font-fallback-emoji-expected.txt
+++ /Volumes/Data/slave/sierra-release-tests-wk1/build/layout-test-results/fast/text/system-font-fallback-emoji-actual.txt
@@ -4,7 +4,7 @@


 PASS systemFontTarget.offsetWidth is not 100
-PASS appleColorEmojiTarget.offsetWidth is 100
+FAIL appleColorEmojiTarget.offsetWidth should be 100. Was 101.
 PASS successfullyParsed is true

 TEST COMPLETE

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