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Test Info:

<html class="test-wait reftest-wait">
<style>
* {
backdrop-filter: hue-rotate(0deg);
offset: path('M 72 1 h 0 v 90') 0px 0rad;
mask-image: url(#x)
}
</style>
<script>
let stop = false;
function func_01() {
document.execCommand("justifyCenter", false)
document.getSelection().collapse(a)
requestAnimationFrame(() => requestAnimationFrame(() => {
if (stop) {
document.documentElement.classList = "";
return;
}
// Ensure that we've painted at least twice.
stop = true;
func_01();
}));
}
document.addEventListener("DOMContentLoaded", func_01)
</script>
<meter id="a" contenteditable="true">AA</meter>