Basically, when given Griseous Orb, Giratina changes from its Altered to Origin Form. But, when the Orb is taken away, Giratina refuses to change back to its Altered Form, making it so it cannot undergo Primal Reversion. Any thoughts/solutions?
I have the same problem my guess is that it’s a bug that needs to be patched.
I also have the same issue. I thought it would have an alternate form but it’s just stuck now.