<!DOCTYPE HTML> <html class="reftest-wait"><head> <meta charset="utf-8"> <title>Testcase for bug 844178</title> <style type="text/css"> html,body { color:black; background-color:white; font-size:16px; padding:0; margin:0; } body { position: fixed; right: 0px; top: 100px; width: 100px; height: 10px; margin:0; padding:0; } :root { overflow:scroll; } span { background:lime; display:inline-block; width:100px; } </style> <script> function doTest() { document.body.style.right='5px'; document.body.offsetHeight; document.documentElement.removeAttribute('class'); } document.addEventListener("MozReftestInvalidate", doTest); </script> </head> <body><span>Hello</span></body> </html>