<!DOCTYPE html>
<style>
meter {
    display: block;
    width: auto
}
</style>
<meter id="host"></meter>
<script>
if (window.internals)
    internals.settings.setAuthorShadowDOMForAnyElementEnabled(true);

document.body.offsetTop; // Force rendering with UA Shadow DOM.

var root = host.createShadowRoot();
root.innerHTML = "<div>You should see no meter.</div>";
</script>