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chromium/third_party/blink/web_tests/external/wpt/css/css-break/offset-top-block-in-inline.html 

<!DOCTYPE html>
<link rel="author" title="Morten Stenshorne" href="mailto:[email protected]">
<link rel="help" href="https://bugs.chromium.org/p/chromium/issues/detail?id=1332572">
<div style="columns:2; column-fill:auto; height:100px;">
  <span>
    <div id="first" style="height:100px; background:cyan;"></div>
    <div id="second" style="height:100px; background:hotpink;"></div>
  </span>
</div>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script>
  test(()=> {
    assert_equals(first.offsetTop, second.offsetTop);
  }, "offsetTop");
</script>