Hello,
Thank you for your quick reply.
It occurrs on one of my websites (which is offline at the moment) but it can also be seen on your demo server (
http://www.shape5.com/demo/design_control/). I tried it on a second computer with the same result.
I noticed this behaviour in other Vertex templates too, whereas older Shape5 templates work fine.
I have recorded a screen video showing this behaviour in FF, IE and Chrome on Windows 7. If you like I can send you a download url via PM (it's a file with 15,3 MB).
Emanuel