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<bugzilla version="5.0.4.1"
          urlbase="https://bugs.webkit.org/"
          
          maintainer="admin@webkit.org"
>

    <bug>
          <bug_id>310940</bug_id>
          
          <creation_ts>2026-03-27 17:44:24 -0700</creation_ts>
          <short_desc>Begin tracking scrollbar changes in subtree for intrinsically sized renderers</short_desc>
          <delta_ts>2026-04-22 15:08:37 -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>Layout and Rendering</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/59419</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="Sammy Gill">sgill26</reporter>
          <assigned_to name="Sammy Gill">sgill26</assigned_to>
          <cc>bfulgham</cc>
    
    <cc>simon.fraser</cc>
    
    <cc>webkit-bug-importer</cc>
    
    <cc>zalan</cc>
          

      

      

      

          <comment_sort_order>oldest_to_newest</comment_sort_order>  
          <long_desc isprivate="0" >
    <commentid>2194534</commentid>
    <comment_count>0</comment_count>
      <attachid>478829</attachid>
    <who name="Sammy Gill">sgill26</who>
    <bug_when>2026-03-27 17:44:24 -0700</bug_when>
    <thetext>Created attachment 478829
Testcase

When a renderer is intrinsically sized, for example with width: max-content we may need to recompute its width if any of its descendants gets a scrollbar</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>2194535</commentid>
    <comment_count>1</comment_count>
    <who name="Sammy Gill">sgill26</who>
    <bug_when>2026-03-27 17:44:44 -0700</bug_when>
    <thetext>rdar://166836126</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>2194537</commentid>
    <comment_count>2</comment_count>
    <who name="Sammy Gill">sgill26</who>
    <bug_when>2026-03-27 17:49:59 -0700</bug_when>
    <thetext>Pull request: https://github.com/WebKit/WebKit/pull/60464</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>2196404</commentid>
    <comment_count>3</comment_count>
    <who name="Sammy Gill">sgill26</who>
    <bug_when>2026-04-02 15:44:28 -0700</bug_when>
    <thetext>Pull request: https://github.com/WebKit/WebKit/pull/60514</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>2203145</commentid>
    <comment_count>4</comment_count>
    <who name="EWS">ews-feeder</who>
    <bug_when>2026-04-22 05:47:50 -0700</bug_when>
    <thetext>Committed 311766@main (9cc37e9a285b): &lt;https://commits.webkit.org/311766@main&gt;

Reviewed commits have been landed. Closing PR #60464 and removing active labels.</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>2203373</commentid>
    <comment_count>5</comment_count>
    <who name="Sammy Gill">sgill26</who>
    <bug_when>2026-04-22 15:08:37 -0700</bug_when>
    <thetext>Submitted web-platform-tests pull request: https://github.com/web-platform-tests/wpt/pull/59419</thetext>
  </long_desc>
      
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            <attachid>478829</attachid>
            <date>2026-03-27 17:44:24 -0700</date>
            <delta_ts>2026-03-27 17:44:24 -0700</delta_ts>
            <desc>Testcase</desc>
            <filename>166836126 2.html</filename>
            <type>text/html</type>
            <size>287</size>
            <attacher name="Sammy Gill">sgill26</attacher>
            
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