Since the addition of vibrant visuals me and my wife have been unable to play together. Attempted changing graphical settings on both to fancy but sadly it still disconnects and sends us back to MC main menu, sometimes can crash the game.
When disconnected the description is given as “cannot join world. The account you are signed in to is currently playing in this world on a different device.”
Also experiencing the same issue. It’s on a realm and both accounts can join individually, but can join split screen.