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<!DOCTYPE html>
<meta charset="utf-8">
<title>Reference for bug 1546856: When the first painted item in a layer is removed, invalidation takes the wrong last paint offset because it hasn't initialized the last paint offset for that layer yet for this paint</title>
<style>
body {
  height: 4000px;
  padding: 200px 0;
}

div {
  width: 600px;
  height: 200px;
  box-sizing: border-box;
  border: 1px solid black;
}

</style>

<div></div>

<script>
document.scrollingElement.scrollTop = 200;
</script>