remove-colgroup-from-anon-table.html

<!doctype html>
<meta charset="utf-8">
<title>Removing the last col group from an anonymous table</title>
<link rel="help" href="https://drafts.csswg.org/css-tables/">
<link rel="help" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1907789">
<link rel="author" href="mailto:[email protected]" title="Emilio Cobos Álvarez">
<link rel="author" href="https://mozilla.org" title="Mozilla">
<link rel="match" href="remove-caption-from-anon-table-ref.html">
<table style="display: block">
  <colgroup>
    <col></col>
  </colgroup>
  <tbody>
    <tr>
      <th>Header</th>
    </tr>
    <tr>
      <td>Some long long long content</td>
    </tr>
  </tbody>
</table>
<script>
onload = function() {
  let colgroup = document.querySelector("colgroup");
  colgroup.getBoundingClientRect();
  colgroup.remove();
}
</script>

chromium/third_party/blink/web_tests/external/wpt/css/css-tables/remove-colgroup-from-anon-table.html