Map editor doesn´t work with Midwinter theme

[fabriciotm]

The map editor does not work when using the Midwinter theme. The screen goes completely black.
When hover over the black screen I can see the links and the pointer changes from cross to pointer.
Map visualization is OK.

Cacti 1.2.27
Weathermap Plugin 1.3

[TheWitness]

I think that @browniebraun is putting all his energy on MidWinter into 1.3.x. I've mentioned him here in hopes he can help.