Random holes in walls appearing after building blueprints, which you can’t fill anymore, or random “wall not placeable here” on blueprints is clipping really inconsistently hard.
Broken wall on angles can’t be filled anymore.
Sometimes, even tho you can’t wall it any tighter, units can just walk around it.
Building walls on maps such as Hill and Dill is an absolute pain, super slow and super unintuitive most of the time.
It needs some heavy optimization to make them more intuitive and placeable.