<?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>312597</bug_id>
          
          <creation_ts>2026-04-17 12:55:20 -0700</creation_ts>
          <short_desc>REGRESSION(311313@main): Caused bad animations on reddit (174960523)</short_desc>
          <delta_ts>2026-04-17 12:58:11 -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>
          
          
          <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>
          
          <blocked>310557</blocked>
          <everconfirmed>1</everconfirmed>
          <reporter name="WebKit Commit Bot">commit-queue</reporter>
          <assigned_to name="WebKit Commit Bot">commit-queue</assigned_to>
          <cc>graouts</cc>
    
    <cc>simon.fraser</cc>
    
    <cc>webkit-bug-importer</cc>
          

      

      

      

          <comment_sort_order>oldest_to_newest</comment_sort_order>  
          <long_desc isprivate="0" >
    <commentid>2201626</commentid>
    <comment_count>0</comment_count>
    <who name="WebKit Commit Bot">commit-queue</who>
    <bug_when>2026-04-17 12:55:20 -0700</bug_when>
    <thetext>https://commits.webkit.org/311313@main introduced a regression:
Caused bad animations on reddit (174960523)

This is an automatic bug report generated by webkitbot. If this bug
report was created because of a flaky test, please file a bug for the flaky
test (if we don&apos;t already have one on file) and dup this bug against that bug
so that we can track how often these flaky tests fail.</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>2201628</commentid>
    <comment_count>1</comment_count>
      <attachid>479154</attachid>
    <who name="WebKit Commit Bot">commit-queue</who>
    <bug_when>2026-04-17 12:55:26 -0700</bug_when>
    <thetext>Created attachment 479154
REVERT of 311313@main

Any committer can land this patch automatically by marking it commit-queue+.  The commit-queue will build and test the patch before landing to ensure that the revert will be successful.  This process takes approximately 15 minutes.

If you would like to land the revert faster, you can use the following command:

  webkit-patch land-attachment ATTACHMENT_ID

where ATTACHMENT_ID is the ID of this attachment.</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>2201629</commentid>
    <comment_count>2</comment_count>
    <who name="EWS">ews-feeder</who>
    <bug_when>2026-04-17 12:57:13 -0700</bug_when>
    <thetext>Committed 311467@main (f8e14904fe1c): &lt;https://commits.webkit.org/311467@main&gt;

All reviewed patches have been landed. Closing bug and clearing flags on attachment 479154.</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>2201630</commentid>
    <comment_count>3</comment_count>
    <who name="Radar WebKit Bug Importer">webkit-bug-importer</who>
    <bug_when>2026-04-17 12:58:11 -0700</bug_when>
    <thetext>&lt;rdar://problem/175029656&gt;</thetext>
  </long_desc>
      
          <attachment
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              isprivate="0"
          >
            <attachid>479154</attachid>
            <date>2026-04-17 12:55:26 -0700</date>
            <delta_ts>2026-04-17 12:57:14 -0700</delta_ts>
            <desc>REVERT of 311313@main</desc>
            <filename>bug-312597-20260417195525.patch</filename>
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