escape-clip-and-paint-before-clip-parent.html

<!DOCTYPE html>
This test succeeds if a box escapes clip from a clipped stacking context
correctly while its clipping container paints after it.
<div style="overflow:hidden; width:100px; height:100px;">
  <div style="will-change:opacity;">
    <div style="position:absolute; overflow:hidden; width:200px; height:200px; background:blue;">
      <div style="position:relative; z-index:-1; width:250px; height:250px; background:green; will-change:opacity;">
      </div>
    </div>
  </div>
</div>

chromium/third_party/blink/web_tests/compositing/overflow/escape-clip-and-paint-before-clip-parent.html