<!DOCTYPE html> <html> <head> <meta name="viewport" content="initial-scale=1"> <style> .scrollable { overflow: auto; -webkit-overflow-scrolling: touch; width: 320px; height: 300px; border: 2px solid blue; } iframe { position: absolute; top: 0; left: 0; height: 200px; width: 200px; border: 2px solid black; background-color: blue; } .box { position: relative; height: 500px; width: 100%; background-color: rgba(0, 0, 0, 0.2); padding: 10px; } </style> <script> if (window.testRunner) testRunner.dumpAsText(); if (window.internals) window.internals.settings.setPreferCompositingToLCDTextEnabled(true); </script> </head> <body> <p>This test should not assert.</p> <div class="scrollable"> <iframe></iframe> <div class="box"></div> </div> </body> </html>