<!--
@WIN-DENY:EVENT_OBJECT_STATECHANGE*role=ROLE_SYSTEM_LIST*
@WIN-DENY:EVENT_OBJECT_REORDER*
@UIA-WIN-DENY:StructureChanged/ChildrenReordered*
-->
<!DOCTYPE html>
<html>
<body>
<select>
  <option selected>Apple</option>
  <option>Orange</option>
  <option>Banana</option>
</select>
<script>
  function go() {
    var select = document.querySelector('select');
    var event = document.createEvent('MouseEvents');
    event.initMouseEvent('mousedown', true, true, window);
    select.dispatchEvent(event);
  }
</script>
</body>
</html>