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<head>
<title>This tests that we can preform selection operations on detached trees.</title>
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<body contentEditable='true'>
<div><canvas style="position:fixed;"></canvas>PASS if no<table style="position:fixed;"><ul style="position:absolute;">crash</ul><button>or assert.</button></table></div>
<script>
if (window.testRunner)
    testRunner.dumpAsText();
document.execCommand('selectall', false, null);
window.document.execCommand('insertunorderedlist', true, null);
</script>
</body>
</html>