<!DOCTYPE html>
<script>
function test() {
  const select = document.querySelector('select');
  select.setCustomValidity('validity');
  select.reportValidity();

  const textarea = document.querySelector('textarea');
  textarea.setRangeText('lol');
  select.autofocus = true;

  setTimeout(() => {
    select.reportValidity();
    textarea.blur();
  }, 0);
}
</script>
<body onload='test()'>
  <p>The onchange should not be triggered by textarea when it got something changed without being focused. Pass if not crashed, and the focused select box is displayed.</p>
  <select></select>
  <textarea onchange="document.all[2].appendChild(document.querySelector('select'));"></textarea>
</body>