<?xml version="1.0" encoding="UTF-8" standalone="yes" ?>
<!DOCTYPE bugzilla SYSTEM "https://bugs.webkit.org/page.cgi?id=bugzilla.dtd">

<bugzilla version="5.0.4.1"
          urlbase="https://bugs.webkit.org/"
          
          maintainer="admin@webkit.org"
>

    <bug>
          <bug_id>196470</bug_id>
          
          <creation_ts>2019-04-01 16:51:57 -0700</creation_ts>
          <short_desc>REGRESSION: Three tests in media/track/track* fail together flakily</short_desc>
          <delta_ts>2019-10-15 10:40:57 -0700</delta_ts>
          <reporter_accessible>1</reporter_accessible>
          <cclist_accessible>1</cclist_accessible>
          <classification_id>1</classification_id>
          <classification>Unclassified</classification>
          <product>WebKit</product>
          <component>Tools / Tests</component>
          <version>WebKit Nightly Build</version>
          <rep_platform>Unspecified</rep_platform>
          <op_sys>Unspecified</op_sys>
          <bug_status>RESOLVED</bug_status>
          <resolution>CONFIGURATION CHANGED</resolution>
          
          
          <bug_file_loc></bug_file_loc>
          <status_whiteboard></status_whiteboard>
          <keywords>InRadar</keywords>
          <priority>P2</priority>
          <bug_severity>Normal</bug_severity>
          <target_milestone>---</target_milestone>
          
          
          <everconfirmed>1</everconfirmed>
          <reporter name="Shawn Roberts">sroberts</reporter>
          <assigned_to name="Per Arne Vollan">pvollan</assigned_to>
          <cc>eric.carlson</cc>
    
    <cc>lforschler</cc>
    
    <cc>pvollan</cc>
    
    <cc>webkit-bot-watchers-bugzilla</cc>
    
    <cc>webkit-bug-importer</cc>
          

      

      

      

          <comment_sort_order>oldest_to_newest</comment_sort_order>  
          <long_desc isprivate="0" >
    <commentid>1523133</commentid>
    <comment_count>0</comment_count>
    <who name="Shawn Roberts">sroberts</who>
    <bug_when>2019-04-01 16:51:57 -0700</bug_when>
    <thetext>The following layout test is flaky on Mojave WK1 Release and Debug

media/track/track-css-visible-stroke.html
media/track/track-cue-left-align.html
media/track/track-cue-line-position.html

Probable cause:

Unsure of point of regression. The 3 tests above fail in tandem on both queues. I have tried reproducing it by testing each test locally, and using the test runners from those runs and I cannot get them to fail. 

Looking at the stdio log, media/track/track-css-visible-stroke.html fails first with a reference mismatch, then the other two fail with failed unexpectedly (reference mismatch didn&apos;t happen)

Flakiness Dashboard:

https://webkit-test-results.webkit.org/dashboards/flakiness_dashboard.html#showAllRuns=true&amp;tests=media%2Ftrack%2Ftrack-css-visible-stroke.html%20media%2Ftrack%2Ftrack-cue-left-align.html%20media%2Ftrack%2Ftrack-cue-line-position.html

Diff for media/track/track-css-visible-stroke.html:

https://build.webkit.org/results/Apple%20Mojave%20Release%20WK1%20(Tests)/r243707%20(4088)/media/track/track-css-visible-stroke-diff.png</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>1523134</commentid>
    <comment_count>1</comment_count>
    <who name="Radar WebKit Bug Importer">webkit-bug-importer</who>
    <bug_when>2019-04-01 16:53:31 -0700</bug_when>
    <thetext>&lt;rdar://problem/49501367&gt;</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>1580166</commentid>
    <comment_count>2</comment_count>
    <who name="Per Arne Vollan">pvollan</who>
    <bug_when>2019-10-15 10:40:57 -0700</bug_when>
    <thetext>These tests do not appear to be flaky on Mac anymore.</thetext>
  </long_desc>
      
      

    </bug>

</bugzilla>