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chromium/third_party/blink/web_tests/compositing/overflow/overlap-testing-rect-with-scrolled-non-scrollable-root-layer-absolute.html 

<!DOCTYPE html>
<body style="height:10000px; overflow:hidden;">
  <div style="position:absolute; left:50px; top:200px; width:100px; height:100px; overflow:hidden;">
    <div style="position:absolute; left:0; top:0; width:100px; height:100px; background:red; will-change:opacity;"></div>
    <div style="position:absolute; left:0; top:0; width:100px; height:100px; background:green;"></div>
  </div>
  <script>
    scrollTo(0, 150);
  </script>
</body>