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<!DOCTYPE html>
<html class="test-wait">
<head>
<meta charset="utf-8">
<title>Testcase for bug 716456 of Mozilla</title>
<script>
function boom() {
const div = document.querySelector("div");
div.contentEditable = "true";
div.focus();
const root = document.documentElement;
document.removeChild(root);
document.appendChild(root);
setTimeout(() => {
getSelection().collapse(div, 0);
document.execCommand("inserthtml", false, "a");
setTimeout(() => {
document.documentElement.removeAttribute("class");
}, 0);
}, 0);
}
</script>
</head>
<body onload="boom();"><div></div></body>
</html>
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