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Test Info:

<!DOCTYPE html>
<html class="test-wait">
<link rel="author" title="Vladimir Levin" href="mailto:vmpstr@chromium.org">
<meta name="assert" content="Removing elements under hidden subtrees doesn't crash">
<p id="parent"><q><svg><marker display="list-item"><hr><object id="inner">
<style>
q {
content-visibility: hidden;
}
</style>
<script>
onload = () => {
document.getElementById("parent").hidden = true;
var test = document.getElementById("inner").border;
document.getElementById("parent").textContent = undefined;
requestAnimationFrame(() => document.documentElement.classList.remove('test-wait'));
}
</script>