<!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>