Hi Dan, thanks for your reply. Yes, this is the behaviour I am expecting which isn't happening with my installed instance of RokBox. There must be some kind of conflict somewhere.
I don't think it can be blamed on the Slider though, for the simple reason that it is happening on normal content also, there is no Slider in this piece of content:
Using the example of "News->Lufthansa A340-600" you can see the same thing is happening to plain content with nothing more than an image and text. So it can't be the slider causing the issue:
www.dropbox.com/s/ud1i0xe359e8lir/Screen...%2023.40.00.png?dl=0
(just a quick note, to expand the content with RokBox click the image not the "+", I'm testing with JCE Mediabox too so the "+" link will acticate that)