<!DOCTYPE HTML> <html class="reftest-wait"> <meta charset="utf-8"> <title>Scrolling shouldn't cause gaps in the shadow</title> <style type="text/css"> #rear { width: 500px; height: 1500px; box-shadow: 0 0 71px #667; display: block; } </style> <div id="rear"></div> <script> function doTest() { document.documentElement.scrollTop = 108; document.documentElement.removeAttribute("class"); } window.addEventListener("MozReftestInvalidate", doTest); document.documentElement.scrollTop = 112; </script>