Ideas
Bovorowhoosh
5 months agoNew Spectator
+1 on this, and confirming some comments below. First noticed this after opening a new save today I only started yesterday, and seemingly "overnight" the terrain paint work was just gone from the lot I was working on. Then it also happened now whilst working on the lot again, right after switching to another type of terrain paint and clicking undo. (No CC used.)
Uploaded the save file here.
Quite sad to see that this is another case of a long-known error without a resolution. :(