after you beat angie, if you go in the tm shop in kristiline town, you cannot talk to the old man neither the old lady, and if you step on a tile (somewhere to the topright) it says "OLDLADY: Welcome!", then you automatically do one step ahead and you cannot move anymore. The only thing you can do in the situation is save (which of course i didnt try to see what happens )
edit: i believe the shop shouldnt be accessible since in the story we cannot take the tm we want cause the shop is still frozen.. maybe when we have access in the shop it won't be bugged