Solved
Exterior Walls turn invisible
i just encountered the issue in build mode that the exterior walls on one side of the building turn invisible unless the walls are fully up. on the first floor, the exterior walls show up all around,...
Is that some sort of balcony on the second floor that has a fence or short half wall around it? If it is, that's what is causing the walls to drop. The game sees the fence as the exterior wall install of the actual wall of the house. What happens if you delete a section of the fence/short wall? My guess is that the house wall comes back. So, if you want the house wall to be up in that setting, then leave a section open and hide it with a planter or something. I have that happening in several builds and it's just the way the game works.
Hope this helps.
