Some players have reported Mog getting stuck hovering or spinning in place in Dying World. Since Mog cannot be thrown in the area, and the Historia Crux only allows the player to visit Serendipity and the Coliseum at the time, he remains unable to uncover necessary people and elements in the area, and the player cannot move forward in the story. There is no known way to fix this issue aside from loading an older save before Mog rejoins Serah. It is recommended to create a new save on the timeline screen before entering A Dying World.