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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>160507</bug_id>
          
          <creation_ts>2016-08-03 07:25:03 -0700</creation_ts>
          <short_desc>The mfenced element does no update correctly when its child list is changed</short_desc>
          <delta_ts>2025-12-31 17:42:59 -0800</delta_ts>
          <reporter_accessible>1</reporter_accessible>
          <cclist_accessible>1</cclist_accessible>
          <classification_id>1</classification_id>
          <classification>Unclassified</classification>
          <product>WebKit</product>
          <component>MathML</component>
          <version>WebKit Nightly Build</version>
          <rep_platform>All</rep_platform>
          <op_sys>All</op_sys>
          <bug_status>NEW</bug_status>
          <resolution></resolution>
          
          
          <bug_file_loc></bug_file_loc>
          <status_whiteboard></status_whiteboard>
          <keywords>BrowserCompat</keywords>
          <priority>P2</priority>
          <bug_severity>Normal</bug_severity>
          <target_milestone>---</target_milestone>
          
          <blocked>160509</blocked>
          <everconfirmed>1</everconfirmed>
          <reporter name="Frédéric Wang Nélar">fred.wang</reporter>
          <assigned_to name="Nobody">webkit-unassigned</assigned_to>
          <cc>ahmad.saleem792</cc>
          

      

      

      

          <comment_sort_order>oldest_to_newest</comment_sort_order>  
          <long_desc isprivate="0" >
    <commentid>1216909</commentid>
    <comment_count>0</comment_count>
      <attachid>285227</attachid>
    <who name="Frédéric Wang Nélar">fred.wang</who>
    <bug_when>2016-08-03 07:25:03 -0700</bug_when>
    <thetext>Created attachment 285227
Testcase

See the attached testcase.

This is the classical issue when using anonymous nodes without managing addChild/removeChild properly. Fixing this issue while keeping anonymous nodes will lead to the same complexity as in old root and scripts implementations.</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>2168741</commentid>
    <comment_count>1</comment_count>
    <who name="Ahmad Saleem">ahmad.saleem792</who>
    <bug_when>2025-12-31 17:42:59 -0800</bug_when>
    <thetext>Chrome Canary 145 &amp; Firefox Nightly 148 match each other while Safari Technology Preview 234 still has issue. So adding `BrowserCompat`, so it is easier to track.

Need to test MathML Core implementation.</thetext>
  </long_desc>
      
          <attachment
              isobsolete="0"
              ispatch="0"
              isprivate="0"
          >
            <attachid>285227</attachid>
            <date>2016-08-03 07:25:03 -0700</date>
            <delta_ts>2016-08-03 07:25:32 -0700</delta_ts>
            <desc>Testcase</desc>
            <filename>mfenced-element-dynamic.html</filename>
            <type>text/html</type>
            <size>1242</size>
            <attacher name="Frédéric Wang Nélar">fred.wang</attacher>
            
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