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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>316268</bug_id>
          
          <creation_ts>2026-06-03 18:56:02 -0700</creation_ts>
          <short_desc>[GTK][WPE] Limit the damage region of the scrollbar to the region actually painted</short_desc>
          <delta_ts>2026-06-04 03:57:55 -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>WebKitGTK</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>DoNotImportToRadar</keywords>
          <priority>P2</priority>
          <bug_severity>Normal</bug_severity>
          <target_milestone>---</target_milestone>
          
          
          <everconfirmed>1</everconfirmed>
          <reporter name="Fujii Hironori">fujii</reporter>
          <assigned_to name="Fujii Hironori">fujii</assigned_to>
          <cc>bugs-noreply</cc>
          

      

      

      

          <comment_sort_order>oldest_to_newest</comment_sort_order>  
          <long_desc isprivate="0" >
    <commentid>2217450</commentid>
    <comment_count>0</comment_count>
    <who name="Fujii Hironori">fujii</who>
    <bug_when>2026-06-03 18:56:02 -0700</bug_when>
    <thetext>[GTK][WPE] Limit the damage region of the scrollbar to the region actually painted

1. WEBKIT_SHOW_DAMAGE=1 ./Tools/Scripts/run-minibrowser --gtk --release
2. https://www.webkitgtk.org/ is loaded
3. Wait a few seconds to start the hiding animation of the overlay scrollbar

Actual: the whole scrollbar area is highlighted
Expected: Only the scrollbar thumb area is highlighted</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>2217457</commentid>
    <comment_count>1</comment_count>
    <who name="Fujii Hironori">fujii</who>
    <bug_when>2026-06-03 19:13:57 -0700</bug_when>
    <thetext>Pull request: https://github.com/WebKit/WebKit/pull/66417</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>2217572</commentid>
    <comment_count>2</comment_count>
    <who name="EWS">ews-feeder</who>
    <bug_when>2026-06-04 03:57:52 -0700</bug_when>
    <thetext>Committed 314540@main (0512cc56a879): &lt;https://commits.webkit.org/314540@main&gt;

Reviewed commits have been landed. Closing PR #66417 and removing active labels.</thetext>
  </long_desc>
      
      

    </bug>

</bugzilla>