As the title says, pressing L3 does not allow additional players to join after the first play session. Once a saved game is loaded, no additional players can join locally for coop. Workaround is to delete my kids saves and make them start over. Because of this, they do not want to play. This bug has been reported over and over again with no responses or comments from Mojang stating a fix is being worked on. Please give this bug the attention it deserves or refund all PS4 purchases