https://github.com/web-platform-tests/wpt
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Tip revision: 40aed2be8bf6949b11d95c9295a2cf0f878fcc50 authored by Arthur Sonzogni on 17 December 2018, 08:59:26 UTC
history.back() called twice must not navigate back twice.
Tip revision: 40aed2b
layout-slot-no-longer-fallback.html
<!DOCTYPE html>
<title>Layout using slot elements</title>
<link rel="author" title="Hayato Ito" href="mailto:hayato@google.com"/>
<link rel="help" href="https://dom.spec.whatwg.org/#shadow-tree-slots">
<link rel="match" href="reference/empty.html"/>
<div id="host"></div>
<script>
const host = document.querySelector('#host');
const sr = host.attachShadow({ mode: 'open' });

sr.innerHTML = '<slot><div id="fallback">Should not be displayed</div></slot>'

document.body.offsetLeft;
host.appendChild(document.createElement('div'));
</script>
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