chromium/third_party/blink/web_tests/fast/multicol/vertical-lr/composited-relpos-overlapping-will-change.html

<!DOCTYPE html>
<p>The word 'PASS' should be seen <em>twice</em> below. They appear together because they are composited, and hence not fragmented.</p>
<div style="-webkit-columns:3; -webkit-column-gap:1em; column-fill:auto; -webkit-writing-mode:vertical-lr; height:26em; width:13em; line-height:2em; orphans:1; widows:1;">
    <div style="will-change:transform; position:absolute; left:0; top:4em; width:10em; height:18em; background:yellow;"></div>
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    r<br>
    <div style="position:relative; margin:0.5em;">PASS<br>PASS</div>
</div>