I do not know if I should be happy or not: I have now, more or less by accident during the final inspection of a new feature at mail.de discovered a bug in the new Firefox 23rd Version 22 worked wonderfully, even Chrome makes no problems, only the new 23er Firefox is not the iframe correctly dar. Here the example URL, if its the look with the Firefox 23 will likely see their contents outside the iframe, and when scrolling the iframe appear unsightly effects:
http://www.phpgangsta.de/download/ff23iframe.html installed workaround the shop operator, so “fixed” – <
It does not look as if it Clickjacking is possible because it is “only” a display problem (clipping), seem to be, but who knows. The problem occurs in both the Windows version as well as the Mac OS X version. Demand in the short # firefox IRC channel were others also understand direct and an issue on the bug tracker has been created by Mozilla:
Hopefully this will be fixed soon, if you have the time and inclination, please voted for the bug. Tomorrow we will look if there is a working workaround.
Edit: added another link with a defective iframe. The problem seems to be the “backface-visibility”, thereby clipping the iframe does not work properly.