<?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>314746</bug_id>
          
          <creation_ts>2026-05-13 11:39:28 -0700</creation_ts>
          <short_desc>[macOS release] fast/images/decode-render-animated-image.html is a flaky failure.</short_desc>
          <delta_ts>2026-05-13 11:49:21 -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>sabouhallawa</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>2210592</commentid>
    <comment_count>0</comment_count>
    <who name="Diego De La Toba">d_delatoba</who>
    <bug_when>2026-05-13 11:39:28 -0700</bug_when>
    <thetext>fast/images/decode-render-animated-image.html is a flaky failure on macOS release.


HISTORY:
https://results.webkit.org/?suite=layout-tests&amp;test=fast%2Fimages%2Fdecode-render-animated-image.html


IMAGE URL:
https://build.webkit.org/results/Apple-Tahoe-Release-AppleSilicon-WK2-Tests/313164@main%20(3860)/fast/inline/blocks-in-inline-paint-order-diffs.html


IMAGES:
See attached.


REPRODUCTION:
I was able to reproduce this on macOS release 26.4 ToT with the following:

run-webkit-tests --no-build --no-retry --no-show-results --exit-after-n-failures=1 --expect-pass --iterations=1000 --force --release fast/images/decode-render-animated-image.html

I am going to mark expectations as pass imageOnlyFailure while this pends investigation.</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>2210593</commentid>
    <comment_count>1</comment_count>
    <who name="Radar WebKit Bug Importer">webkit-bug-importer</who>
    <bug_when>2026-05-13 11:39:34 -0700</bug_when>
    <thetext>&lt;rdar://problem/176994454&gt;</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>2210595</commentid>
    <comment_count>2</comment_count>
    <who name="Diego De La Toba">d_delatoba</who>
    <bug_when>2026-05-13 11:41:30 -0700</bug_when>
    <thetext>Looks like a WEBKIT issue. Any &quot;fix&quot; in the test (adding retries, rAFs, sleeps between decode/drawImage) would be compensating for the exact guarantee that the two helpers are supposed to provide: decode() promise resolving means &quot;next frame decoded &amp; ready to paint,&quot; and the debug canvas drawing setting means &quot;canvas shows that current frame.&quot;</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>2210597</commentid>
    <comment_count>3</comment_count>
    <who name="Diego De La Toba">d_delatoba</who>
    <bug_when>2026-05-13 11:47:28 -0700</bug_when>
    <thetext>Test gardening pull request: https://github.com/WebKit/WebKit/pull/64859</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>2210599</commentid>
    <comment_count>4</comment_count>
    <who name="EWS">ews-feeder</who>
    <bug_when>2026-05-13 11:49:21 -0700</bug_when>
    <thetext>Test gardening commit 313181@main (71861678c959): &lt;https://commits.webkit.org/313181@main&gt;

Reviewed commits have been landed. Closing PR #64859 and removing active labels.</thetext>
  </long_desc>
      
      

    </bug>

</bugzilla>