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<!DOCTYPE html>
<title>Layout Instability: shift of invisible element not counted</title>
<div id="target" style="width: 100px; height: 100px; position: relative"></div>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="resources/util.js"></script>
<script>
promise_test(async () => {
const watcher = new ScoreWatcher;
// Wait for the initial render to complete.
await waitForAnimationFrames(2);
target.style.top = "200px";
await waitForAnimationFrames(3);
assert_equals(watcher.score, 0);
}, "Shift of invisible element not counted.");
</script>