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<!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>313677</bug_id>
          
          <creation_ts>2026-04-29 12:56:00 -0700</creation_ts>
          <short_desc>[iOS] 2 tests in imported/w3c/web-platform-tests/css/css-images/image-orientation are failing with image diff</short_desc>
          <delta_ts>2026-05-01 11:08:10 -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>RESOLVED</bug_status>
          <resolution>FIXED</resolution>
          
          <see_also>https://github.com/web-platform-tests/wpt/pull/59600</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="Marta Darbinyan">darbinyan</reporter>
          <assigned_to name="Brent Fulgham">bfulgham</assigned_to>
          <cc>bfulgham</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>2205951</commentid>
    <comment_count>0</comment_count>
    <who name="Marta Darbinyan">darbinyan</who>
    <bug_when>2026-04-29 12:56:00 -0700</bug_when>
    <thetext>The following tests are failing with image diff in iOS EWS and also on post-commit bots after they were ungardened in 311390@main.

imported/w3c/web-platform-tests/css/css-images/image-orientation/image-orientation-background-image.html
imported/w3c/web-platform-tests/css/css-images/image-orientation/image-orientation-list-style-image.html

test results:
https://ews-build.webkit.org/#/builders/154/builds/24753

History:
https://results.webkit.org/?suite=layout-tests&amp;suite=layout-tests&amp;test=imported%2Fw3c%2Fweb-platform-tests%2Fcss%2Fcss-images%2Fimage-orientation%2Fimage-orientation-background-image.html&amp;test=imported%2Fw3c%2Fweb-platform-tests%2Fcss%2Fcss-images%2Fimage-orientation%2Fimage-orientation-list-style-image.html&amp;platform=ios</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>2205958</commentid>
    <comment_count>1</comment_count>
    <who name="Radar WebKit Bug Importer">webkit-bug-importer</who>
    <bug_when>2026-04-29 13:05:59 -0700</bug_when>
    <thetext>&lt;rdar://problem/175878256&gt;</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>2205963</commentid>
    <comment_count>2</comment_count>
    <who name="EWS">ews-feeder</who>
    <bug_when>2026-04-29 13:22:33 -0700</bug_when>
    <thetext>Test gardening commit 312310@main (4fde5139fd7d): &lt;https://commits.webkit.org/312310@main&gt;

Reviewed commits have been landed. Closing PR #63919 and removing active labels.</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>2206433</commentid>
    <comment_count>3</comment_count>
    <who name="Brent Fulgham">bfulgham</who>
    <bug_when>2026-04-30 16:39:31 -0700</bug_when>
    <thetext>These small pixel differences are caused by JPEG encoding differences in the before/after images. We need to increase the fuzz factor to support macOS and iOS with the same reference content.</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>2206434</commentid>
    <comment_count>4</comment_count>
    <who name="Brent Fulgham">bfulgham</who>
    <bug_when>2026-04-30 16:42:13 -0700</bug_when>
    <thetext>Pull request: https://github.com/WebKit/WebKit/pull/64010</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>2206613</commentid>
    <comment_count>5</comment_count>
    <who name="EWS">ews-feeder</who>
    <bug_when>2026-05-01 10:56:49 -0700</bug_when>
    <thetext>Committed 312442@main (4c075bcc2672): &lt;https://commits.webkit.org/312442@main&gt;

Reviewed commits have been landed. Closing PR #64010 and removing active labels.</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>2206617</commentid>
    <comment_count>6</comment_count>
    <who name="Brent Fulgham">bfulgham</who>
    <bug_when>2026-05-01 11:08:10 -0700</bug_when>
    <thetext>Submitted web-platform-tests pull request: https://github.com/web-platform-tests/wpt/pull/59600</thetext>
  </long_desc>
      
      

    </bug>

</bugzilla>