I don't know if this happened to someone else, it's like a big bug and some guys are usen it to win cheating. When I was dueling with x guy, he used gravitiy axe on one of my monster (had 3 monsters in my field on defensive position). The fact is that right after he used this card, I was unable to change any position, and even was impossible to use any magic or trap card on my field. Finally I lost the duel just for cards. It was unfair and the guy I was fighting knew what he was doing.
frankosses
frankosses