File: remove-anchor-dirty-layout.html

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<!DOCTYPE html>
<link rel="help" href="https://issues.chromium.org/issues/381362589">
<style>
  #anchor {
    anchor-name: --a;
  }
  #target {
    position: absolute;
    top: anchor(top);
    position-anchor: --a;
  }
</style>
<div id="anchor"></div>
<div id="target"></div>

<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script>
  promise_test(async t => {
    await new Promise(resolve => requestAnimationFrame(resolve));
    await new Promise(resolve => requestAnimationFrame(resolve));
    await new Promise(resolve => step_timeout(resolve));
    let element = document.getElementById("anchor");
    element.remove();
    await new Promise(resolve => requestAnimationFrame(resolve));
  }, "Remove anchor");
</script>