<!DOCTYPE html>
<html>
<head>
<style>
div {
    column-count: 2;
}
details {
    border-image: url(#foo);
}
</style>
</head>
<body>
<div><details><summary style="column-span: all"></summary></details></div>
PASS if no crash.
<script>
if (window.testRunner)
    testRunner.dumpAsText();
r = document.caretRangeFromPoint(0, 0);
r.insertNode(document.createElement("summary"));
document.body.offsetHeight;
document.getElementsByTagName("summary")[1].remove();
</script>
</body>
</html>