I can show the map to the players, just not all of it when used as a map. I am aware of the controls, but I think my map is simply to large to fit completely, which isn't a problem for me at all.
The map is 1500x1500 and I am running the game at 1920x1080.
It works fine as a vignette.
This is the best I can do with the map as a map:
map 1 map 2 vignette