<?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>312842</bug_id>
          
          <creation_ts>2026-04-20 17:59:00 -0700</creation_ts>
          <short_desc>[ macOS iOS arm64 ]imported/w3c/web-platform-tests/css/css-flexbox/justify-content-00x.htm are constant image diffs</short_desc>
          <delta_ts>2026-04-23 12:15:04 -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>New Bugs</component>
          <version>WebKit Nightly Build</version>
          <rep_platform>Unspecified</rep_platform>
          <op_sys>Unspecified</op_sys>
          <bug_status>NEW</bug_status>
          <resolution></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="Diego De La Toba">d_delatoba</reporter>
          <assigned_to name="Nobody">webkit-unassigned</assigned_to>
          <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>2202505</commentid>
    <comment_count>0</comment_count>
    <who name="Diego De La Toba">d_delatoba</who>
    <bug_when>2026-04-20 17:59:00 -0700</bug_when>
    <thetext>imported/w3c/web-platform-tests/css/css-flexbox/justify-content-001.htm
imported/w3c/web-platform-tests/css/css-flexbox/justify-content-002.htm
imported/w3c/web-platform-tests/css/css-flexbox/justify-content-004.htm
imported/w3c/web-platform-tests/css/css-flexbox/justify-content-005.htm 
are constant image diffs on macOS arm64 and iOS


HISTORY:
https://results.webkit.org/?suite=layout-tests&amp;suite=layout-tests&amp;suite=layout-tests&amp;suite=layout-tests&amp;test=imported%2Fw3c%2Fweb-platform-tests%2Fcss%2Fcss-flexbox%2Fjustify-content-005.htm&amp;test=imported%2Fw3c%2Fweb-platform-tests%2Fcss%2Fcss-flexbox%2Fjustify-content-004.htm&amp;test=imported%2Fw3c%2Fweb-platform-tests%2Fcss%2Fcss-flexbox%2Fjustify-content-002.htm&amp;test=imported%2Fw3c%2Fweb-platform-tests%2Fcss%2Fcss-flexbox%2Fjustify-content-001.htm


DIFF:
https://build.webkit.org/results/Apple-Tahoe-Release-AppleSilicon-WK2-Tests/311621@main%20(3392)/imported/w3c/web-platform-tests/css/css-flexbox/justify-content-001-diffs.html
https://build.webkit.org/results/Apple-Tahoe-Release-AppleSilicon-WK2-Tests/311621@main%20(3392)/imported/w3c/web-platform-tests/css/css-flexbox/justify-content-002-diffs.html
https://build.webkit.org/results/Apple-Tahoe-Release-AppleSilicon-WK2-Tests/311621@main%20(3392)/imported/w3c/web-platform-tests/css/css-flexbox/justify-content-004-diffs.html
https://build.webkit.org/results/Apple-Tahoe-Release-AppleSilicon-WK2-Tests/311621@main%20(3392)/imported/w3c/web-platform-tests/css/css-flexbox/justify-content-005-diffs.html

IMAGES:
See attached.


BUILD URL:
https://build.webkit.org/#/builders/1716/builds/3392


REPRODUCTION:
I was not able to reproduce this on macOS or iOS - looks like this only fails on bots.

I will mark expectations as fail while this pends investigation.</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>2202506</commentid>
    <comment_count>1</comment_count>
    <who name="Radar WebKit Bug Importer">webkit-bug-importer</who>
    <bug_when>2026-04-20 17:59:07 -0700</bug_when>
    <thetext>&lt;rdar://problem/175208619&gt;</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>2202511</commentid>
    <comment_count>2</comment_count>
    <who name="Diego De La Toba">d_delatoba</who>
    <bug_when>2026-04-20 18:09:19 -0700</bug_when>
    <thetext>Test gardening pull request: https://github.com/WebKit/WebKit/pull/63187</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>2202512</commentid>
    <comment_count>3</comment_count>
    <who name="EWS">ews-feeder</who>
    <bug_when>2026-04-20 18:11:10 -0700</bug_when>
    <thetext>Test gardening commit 311635@main (ea24d74130c7): &lt;https://commits.webkit.org/311635@main&gt;

Reviewed commits have been landed. Closing PR #63187 and removing active labels.</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>2203806</commentid>
    <comment_count>4</comment_count>
    <who name="Sammy Gill">sgill26</who>
    <bug_when>2026-04-23 12:15:04 -0700</bug_when>
    <thetext>&lt;rdar://problem/175431146&gt;</thetext>
  </long_desc>
      
      

    </bug>

</bugzilla>