[4.3] Main map display issues on mac

[zantilin]

Hey I've noticed that on my mac carbonite maps don't work properly.
I've tried reseting user data, im pretty sure when I used to use windows the maps dont display like this. As you can see from my screenshot, there's a fixed square in the middle and hovering zones only reveals the POI not the more detailed zone map.

fig1. Hovering over map over wintergrasp
fig2. Not hovering map

Thoughts?

--Rob