Created attachment 196599 [details] Failing Test If an element with overflow: auto; css property ( element A ) placed inside an element with display: -webkit-box; ( element B ) the scrollTop property of the scrolled element A resets to 0 if the DOM is changed inside element B. I see this bug on the latest nightly build of WebKit ( WebKit-SVN-r147708 ) also latest Chrome, Safari 6.0.3 and Safari on iOS 6.1.2. Here's the failing test http://jsfiddle.net/PRLQx/8/ . Also I attached the html with a test.