During the Gold Saucer date, when she asks if you enjoy spending time with her, Cloud's response animations seem backwards. The response seems right. It's just the animation that's backwards.
What I mean is, if I choose yes, he shakes his head no. If I choose no, he shakes his head yes.
Edit: I just found a minor inconsistency with the Fort Condor battles. The guy at the window says, "Oh, and you can now use Bomb Catapults." But, when you're placing them, they're called "Fire Catapult".