overflow-hidden-smooth-scroll-crash.html

<!DOCTYPE html>
<html class="test-wait">
<link rel="help" href="https://drafts.csswg.org/cssom-view/#concept-smooth-scroll">
<link rel="help" href="https://crbug.com/356436619">
<body style="font-size: 4000px">
  A
  <div id=container style="overflow: hidden">
    B
    <div style="overflow: scroll">C</div>
  </div>
 </div>
</body>
<script>
function doTest() {
  container.scrollLeft = 1;
  container.addEventListener('scrollend', () => {
    document.documentElement.classList.remove('test-wait');
  });
  container.style.scrollBehavior = 'smooth';
  container.scrollLeft = 20;
}
window.addEventListener('load', doTest);
</script>

chromium/third_party/blink/web_tests/external/wpt/css/cssom-view/overflow-hidden-smooth-scroll-crash.html