<!DOCTYPE html>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<link rel="help" href="https://crbug.com/1021676">
<div id="tfoot" style="display: table-footer-group; transform: scale(2);">
  <div id="oof" style="position: absolute;">text</div>
</div>
<script>
test(() => {
  document.body.offsetTop;

  // Make the ICB the containing-block.
  document.getElementById('tfoot').style.transform = '';
  document.body.offsetTop;

  document.getElementById('oof').innerText = '';
  document.body.offsetTop;
}, 'test passes if it does not crash');
</script>