When I open map for the 1st time Cartographer starts and looks normal but when I close it and reopen it just the areas explored (or opened up by foglight) show - the rest of the map is gone - not greyed out I mean gone - the map border and everything else is just not there. When I zoom out I just get a big blank, except any poi that I made and they are just floating in space. I get the same nothing screen in world map, cosmic map and all zone maps except the zone I am currently in. I deleted all my Cart folders and reinstalled them all - same.
I reverted back to an earlier version - works just fine again.