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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>