html/rendering/non-replaced-elements/the-fieldset-and-legend-elements/fieldset-dynamic-pseudo.html

<!DOCTYPE html>
<!--
Chrome had a crash bug in a case of dynamic addition of pseudo elements.
crbug.com/1242229
-->
<html class="reftest-wait">
<head>
<link rel="match" href="fieldset-dynamic-pseudo-ref.html">
<style>
*::after { content:"after text"; border:3px solid black;}
*::before { content:"before text"; border:3px solid black; }
</style>
</head>
<body>
<fieldset><legend>Legend</legend></fielset>
<script>
document.styleSheets[0].disabled = true;

requestAnimationFrame(() => {
  requestAnimationFrame(() => {
    document.styleSheets[0].disabled = false;
    document.documentElement.className = '';
  });
});
</script>
</body>
</html>