<?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>196724</bug_id>
          
          <creation_ts>2019-04-08 21:06:21 -0700</creation_ts>
          <short_desc>Sticky-positioned element inside async overflow:scroll moves incorrectly</short_desc>
          <delta_ts>2019-06-11 13:56:25 -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>Scrolling</component>
          <version>WebKit Nightly Build</version>
          <rep_platform>Unspecified</rep_platform>
          <op_sys>Unspecified</op_sys>
          <bug_status>RESOLVED</bug_status>
          <resolution>DUPLICATE</resolution>
          <dup_id>198532</dup_id>
          
          <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="Simon Fraser (smfr)">simon.fraser</reporter>
          <assigned_to name="Nobody">webkit-unassigned</assigned_to>
          <cc>koivisto</cc>
    
    <cc>simon.fraser</cc>
          

      

      

      

          <comment_sort_order>oldest_to_newest</comment_sort_order>  
          <long_desc isprivate="0" >
    <commentid>1525554</commentid>
    <comment_count>0</comment_count>
    <who name="Simon Fraser (smfr)">simon.fraser</who>
    <bug_when>2019-04-08 21:06:21 -0700</bug_when>
    <thetext>For position:-webkit-sticky inside async overflow:scroll, there are several scenarios that we have to deal with:
1. Compositing ancestor is some ancestor outside the overflow:scroll
2. Compositing ancestor is the overflow:scroll (works OK now)
3. Compositing ancestor is an element inside the overflow:scroll</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>1525555</commentid>
    <comment_count>1</comment_count>
    <who name="Simon Fraser (smfr)">simon.fraser</who>
    <bug_when>2019-04-08 21:06:42 -0700</bug_when>
    <thetext>&lt;rdar://problem/49667212&gt;</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>1525559</commentid>
    <comment_count>2</comment_count>
    <who name="Simon Fraser (smfr)">simon.fraser</who>
    <bug_when>2019-04-08 21:38:06 -0700</bug_when>
    <thetext>In ScrollingTreeStickyNode::applyLayerPositions(), enclosingScrollingNodeIncludingSelf() is wrong if the scroller is not a compositing ancestor of the sticky.</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>1543822</commentid>
    <comment_count>3</comment_count>
    <who name="Simon Fraser (smfr)">simon.fraser</who>
    <bug_when>2019-06-11 13:56:25 -0700</bug_when>
    <thetext>I think bug 198532 fixed this.

*** This bug has been marked as a duplicate of bug 198532 ***</thetext>
  </long_desc>
      
      

    </bug>

</bugzilla>