Adding a wall to an already-built building deletes said building.
Steps to reproduce:
Build buildings. In my case, they are the two template ‘towers’. Walls are built between them and the cliff with no problems:
Build a wall between the two template buildings:
Viola. One of the buildings is deleted, leaving a hole in the ground. I assume it’s due to the wall and building becoming ‘one’, yet doesn’t happen with the other walls:
A nice wall between two buildings.
A nice hole in the ground, lost resources and more work for the little guys.
Version Number and Mods in use: