<?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>198661</bug_id>
          
          <creation_ts>2019-06-07 09:04:06 -0700</creation_ts>
          <short_desc>Layout Test landed flaky [ Mojave WK2 ] scrollingcoordinator/mac/nested-sticky.html is a flaky ImageOnlyFailure and Timeout</short_desc>
          <delta_ts>2019-06-07 09:14:46 -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>NEW</bug_status>
          <resolution></resolution>
          
          <see_also>https://bugs.webkit.org/show_bug.cgi?id=197255</see_also>
          <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="Nobody">webkit-unassigned</assigned_to>
          <cc>fred.wang</cc>
    
    <cc>jlewis3</cc>
    
    <cc>ryanhaddad</cc>
    
    <cc>simon.fraser</cc>
    
    <cc>tsavell</cc>
    
    <cc>webkit-bug-importer</cc>
    
    <cc>zalan</cc>
          

      

      

      

          <comment_sort_order>oldest_to_newest</comment_sort_order>  
          <long_desc isprivate="0" >
    <commentid>1542832</commentid>
    <comment_count>0</comment_count>
    <who name="Shawn Roberts">sroberts</who>
    <bug_when>2019-06-07 09:04:06 -0700</bug_when>
    <thetext>The following layout test is flaky on Mojave WK2 Debug and Release

scrollingcoordinator/mac/nested-sticky.html

Probable cause:

Test is more flaky on Debug runs. Test was added in r244630 and appears to have been flaky its entire available history on the dashboard. 

The ImageOnlyFailure&apos;s appear to only happen on Debug runs. Cannot reproduce them on Release builds, but the Release timeout is reproducible just as easily on Release builds.

Reproducible with:

run-webkit-tests scrollingcoordinator/mac/nested-sticky.html --iter 100 -f --debug

Will average aboutt 3 reference mismatches and 4 timeouts be 100 iteration run. 

Flakiness Dashboard:

https://webkit-test-results.webkit.org/dashboards/flakiness_dashboard.html#showAllRuns=true&amp;tests=scrollingcoordinator%2Fmac%2Fnested-sticky.html</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>1542833</commentid>
    <comment_count>1</comment_count>
    <who name="Radar WebKit Bug Importer">webkit-bug-importer</who>
    <bug_when>2019-06-07 09:04:47 -0700</bug_when>
    <thetext>&lt;rdar://problem/51523533&gt;</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>1542836</commentid>
    <comment_count>2</comment_count>
    <who name="Shawn Roberts">sroberts</who>
    <bug_when>2019-06-07 09:13:19 -0700</bug_when>
    <thetext>Marked flaky in https://trac.webkit.org/changeset/246202/webkit</thetext>
  </long_desc>
      
      

    </bug>

</bugzilla>