I'm getting this issue too. I haven't been terraining for a while, but just did some experiments and can't edit the terrain after closing the engine. Basically completely ruins modding, and probably has been a huge factor in the stagnation of this community. It's weird how only some people get this problem, and that Seb can't even reproduce it. Of all the people working at Larian, not one of them has gotten this problem? Obviously they're not all texturing, but it's weird how this only seems to be an issue for modders.
