This happens when you're the session host because it needs to disconnect all other players from the game or attempt to select a new session host.Originally Posted by R3turner Go to original post
Usually this happens on the end game screen in which you try to leave and the game actively is trying to find a new session host for a game that is no longer in progress.
It takes about 60 seconds for the game to update and allow you to use your map again. While annoying it's just a side effect of their P2P system