So this bug has happened enough that it is fustrated me to make a post.
Basically what happens is that somebody will join the game but never load in, the bot will not disappear but the game thinks somebody has joined. Not a problem in itself but it prevents me leaving the game and seems to prevent me finishing the level as I just spent a good 10 mins waiting in the shadow bridge to complete the level, but it would not finish, nor could I quit as “player is attempting to join game”.
This has happened multiple times and is fustrating to play the entire level just to find that I was not ever able to complete it since somebody failed to connect to my game.