File: fieldset-dynamic-oof-container-crash.html

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<!DOCTYPE html>
<html class="test-wait">
<title>No crash after stop being an asbolute container.</title>
<link rel="help" href="https://crbug.com/1395688">
<style>
.c2 {
  transform: rotate3d(0, 1, 0, 45deg);
  column-width: 100px;
}
.c19 {
  overflow: auto;
  padding-left: 65536px;
  column-count: 3;
}

q {
  position: absolute;
  column-width: 1px;
}

body {
  column-count: 3;
}
</style>
<script>
function animationFrame() {
  return new Promise(resolve => requestAnimationFrame(resolve));
}

async function doTest() {
  document.documentElement.appendChild(document.createElement('body'));
  await animationFrame();
  document.body.innerHTML = '<fieldset class=c2><q>q</q></fieldset>';
  window.scrollBy(28, 71);
  await animationFrame();
  document.querySelector('fieldset').setAttribute('class', 'c19');
  await animationFrame();
  document.body.remove();
  await animationFrame();
  await animationFrame();
  document.documentElement.classList.remove('test-wait');
}

doTest();
</script>
</html>