Upon playing the game and grabbing a stick to make a splint the terrain changed to a light coloured wire frame model.
Made a video for it here: https://www.youtube.com/watch?v=uwcvRhpUgUw&list=UUq0IBb9-G4Q05NVUBt1Ie0g&index=1
In the video I describe in detail the bug and my steps to try and reproduce it. Seems to be a client side thing and will fix itself ONLY if the user completely quits the application and re-enters. This happened while at Dubrovka.