<style>
  ::first-line {
    width: 0;
  }
</style>
<script>
if (window.testRunner)
  testRunner.dumpAsText();
  onload = () => {
    document.designMode = 'on';
    document.execCommand('SelectAll');
    document.execCommand('Bold');
    document.execCommand('InsertOrderedList');
  };
</script>
<div></div>PASS if no crash or assert.