When playing on two player of one player die, you can't see their life or their inventory. If you die twice the screen is blank and would leave the game and comeback.

When playing on two players if one of the player die twice their screen is blank and you can't see anything. If the player die once you can't see the hearts or inventory. Another one is when one is trying to be on creative and the other is survival it changes both when it suppose to change one player not both.