<?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>186131</bug_id>
          
          <creation_ts>2018-05-31 01:48:12 -0700</creation_ts>
          <short_desc>hidden attribute on colgroup col thead tbody tfoot tr td th should have visibility: collapse</short_desc>
          <delta_ts>2026-01-30 16:27:44 -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>Tables</component>
          <version>Safari Technology Preview</version>
          <rep_platform>Unspecified</rep_platform>
          <op_sys>Unspecified</op_sys>
          <bug_status>NEW</bug_status>
          <resolution></resolution>
          
          
          <bug_file_loc></bug_file_loc>
          <status_whiteboard></status_whiteboard>
          <keywords>WPTImpact</keywords>
          <priority>P2</priority>
          <bug_severity>Normal</bug_severity>
          <target_milestone>---</target_milestone>
          <dependson>8735</dependson>
          
          <everconfirmed>1</everconfirmed>
          <reporter name="Simon Pieters (:zcorpan)">zcorpan</reporter>
          <assigned_to name="Nobody">webkit-unassigned</assigned_to>
          <cc>ahmad.saleem792</cc>
    
    <cc>karlcow</cc>
    
    <cc>ntim</cc>
          

      

      

      

          <comment_sort_order>oldest_to_newest</comment_sort_order>  
          <long_desc isprivate="0" >
    <commentid>1428781</commentid>
    <comment_count>0</comment_count>
    <who name="Simon Pieters (:zcorpan)">zcorpan</who>
    <bug_when>2018-05-31 01:48:12 -0700</bug_when>
    <thetext>Tests: https://github.com/web-platform-tests/wpt/pull/11264

Spec: https://html.spec.whatwg.org/multipage/rendering.html#tables-2

Use case: Filtering a table and using the &quot;hidden&quot; attribute to hide rows causes the widths of the columns to change if it&apos;s hidden by display: none. With visibility: collapse the widths of the columns do not change. (Type something in the filter of https://bocoup.github.io/wpt-disabled-tests-report/ for a demo.)</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>1430059</commentid>
    <comment_count>1</comment_count>
    <who name="Simon Pieters (:zcorpan)">zcorpan</who>
    <bug_when>2018-06-05 00:36:56 -0700</bug_when>
    <thetext>Update: table cells should still be display: none.

https://github.com/whatwg/html/pull/3736
https://github.com/web-platform-tests/wpt/pull/11339</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>2176740</commentid>
    <comment_count>2</comment_count>
    <who name="Karl Dubost">karlcow</who>
    <bug_when>2026-01-30 16:27:44 -0800</bug_when>
    <thetext>seeAlso http://wpt.live/css/css-tables/visibility-collapse-colspan-001.html</thetext>
  </long_desc>
      
      

    </bug>

</bugzilla>