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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>193191</bug_id>
          
          <creation_ts>2019-01-07 01:44:10 -0800</creation_ts>
          <short_desc>`-webkit-overflow-scrolling: touch` causes incorrect div rendering</short_desc>
          <delta_ts>2022-07-01 16:06:23 -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>CSS</component>
          <version>Safari 12</version>
          <rep_platform>iPhone / iPad</rep_platform>
          <op_sys>iOS 12</op_sys>
          <bug_status>RESOLVED</bug_status>
          <resolution>WORKSFORME</resolution>
          
          
          <bug_file_loc></bug_file_loc>
          <status_whiteboard></status_whiteboard>
          <keywords></keywords>
          <priority>P2</priority>
          <bug_severity>Normal</bug_severity>
          <target_milestone>---</target_milestone>
          
          
          <everconfirmed>1</everconfirmed>
          <reporter name="Alberto">alberto</reporter>
          <assigned_to name="Nobody">webkit-unassigned</assigned_to>
          <cc>alberto</cc>
    
    <cc>bfulgham</cc>
    
    <cc>simon.fraser</cc>
    
    <cc>zalan</cc>
          

      

      

      

          <comment_sort_order>oldest_to_newest</comment_sort_order>  
          <long_desc isprivate="0" >
    <commentid>1492219</commentid>
    <comment_count>0</comment_count>
      <attachid>358487</attachid>
    <who name="Alberto">alberto</who>
    <bug_when>2019-01-07 01:44:10 -0800</bug_when>
    <thetext>Created attachment 358487
Test case that reproduces the bug

See the test case attached. When `-webkit-overflow-scrolling: touch;` is set to the `right` CSS class, the red div covers the blue bar on iOS. If set to `-webkit-overflow-scrolling: auto;`, the blue bar covers the red div, which is the expected behaviour and consistent with Safari on desktop and every other browser.</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>1492371</commentid>
    <comment_count>1</comment_count>
    <who name="Simon Fraser (smfr)">simon.fraser</who>
    <bug_when>2019-01-07 13:44:38 -0800</bug_when>
    <thetext>-webkit-overflow-scrolling: touch; on a scrollable element creates CSS stacking context.</thetext>
  </long_desc>
      
          <attachment
              isobsolete="0"
              ispatch="0"
              isprivate="0"
          >
            <attachid>358487</attachid>
            <date>2019-01-07 01:44:10 -0800</date>
            <delta_ts>2019-01-07 01:44:10 -0800</delta_ts>
            <desc>Test case that reproduces the bug</desc>
            <filename>webkit-overflow-scrolling-bug.html</filename>
            <type>text/html</type>
            <size>1073</size>
            <attacher name="Alberto">alberto</attacher>
            
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