Hello Daniel,
I saw a message from Johny hereunder that he had some problems with the zooming tool on his site; his example is not viewable anymore, so I'm wondering if it was the same problem as I have? The original topic has been closed, so I'm making this new one.
Would you mind checking for a moment, please?
Map is here: http://www.shuntdev01.be/locaties.html#!/catid=1
The zooming slider seems to be cut in two and the upper part is barely visible and not working.
Same problem as reported by Johny / same remedy you mentioned?

F.y.i.: we are using a custom theme for the T3 blank template from the T3-framework.

Thanks in advance for your help,
shunty