Map grey in tabs

Hey there,

First of all, great plugin! I really enjoy working with it!

I have created a couple of maps, however, only the map in the tab within one website displays.
The other maps are grey. It looks like the page would need to refresh but does’nt (When I hit “refresh”, it shows the first tab, again).

Is there any workaround or have you heard of that problem before?

Best regards,

Michael