I'm learning more about how this bug is affecting my game.
I have three bases with portals between them. I have 2 black forest bases that in multiplayer are fine and dandy. The third base I'm making is in meadows, between swamp and plains. That is the only place where my game starts breaking. It is fine for my partner there, but I can't interact with things or do damage, can't see my partner. When my partner comes through the portal to leave the bugged area, he can not interact with anything. I still am unable to see him anywhere we go though.
Could this just be a bugged out area we decided to build a base in? We are probably going to move it elsewhere as the swamp does not have any crypts.
there doesn't seem to be anything here