I'm having a problem a couple of my multiplayer games. I can't build any harbor buildings in my ports, such as fisheries or sub bases, on a couple of my islands, though others are fine. Whenever I try placing a building, it just says port area blocked, even though it clearly isn't. My friend isn't having any issues like this. We've tried restarting and reloading the game to no avail.
Anyone else have this problem or know a workaround?