131676 2014-04-15 04:37:45 -0700 'mousewheel'-event is not fired inside an iFrame under certain conditions 2014-04-15 04:37:45 -0700 1 1 1 Unclassified WebKit UI Events 528+ (Nightly build) Unspecified Unspecified NEW P2 Normal --- 1 andreas.parusel webkit-unassigned oldest_to_newest 1000828 0 andreas.parusel 2014-04-15 04:37:45 -0700 Preconditions: A webpage living inside an iFrame contains a <script>-tag in which another script-element is programmatically created and its src-property is set to an external JavaScript-file: <script> var elem = document.createElement("script"); var head = document.getElementsByTagName("head")[0]; head.appendChild(elem); elem.src = "externalScript.js"; </script> Bug: The setting of the script-element's src-property brakes the firing of mousewheel-events inside the iFrame (see attached example, where no 'mouse wheel' logs will appear in the console.) Workaround: If you put the statement window.onmousewheel = function(){}; inside of a script-tag (not in an external JS-file!), then the webpage inside the iFrame reacts to mousewheel-events again. Please find a reduced example demonstrating this bug and the found workaround attached.