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chromium/third_party/blink/web_tests/external/wpt/mathml/crashtests/mtd-as-multicol.html 

<!DOCTYPE html>
<link rel="author" title="Morten Stenshorne" href="mailto:[email protected]">
<link rel="help" href="https://bugs.chromium.org/p/chromium/issues/detail?id=1354561">
<div id="container"></div>
<script>
  mtd = document.createElementNS("http://www.w3.org/1998/Math/MathML", "mtd");
  mtd.style.columns = "2";
  container.appendChild(mtd);
</script>