I was trying out the base camp upgrades for the first time, then I realized a couple of problems:
The game does not tell me where the upgrades are going to be constructed. Sometimes it’s fine, other times it overrides some of the constructions that I had previously made myself. My precious rock forge disappeared, and in its stead, a workbench appeared. So much for an “upgrade”.
The farm shed construction seems to be bugged. After completing the surveying for the farm, I get an option to start a shed, and also another option to upgrade the shed. Thing is, I finished the “upgrade” before I finished the first step of the shed. What happened was that the “upgraded” part was removed, and now I’m left with an un-upgraded shed and cannot upgrade it.
See the figure below:
The places marked with red had walls and a door, but now they are gone.