Other mistake: In the 'Macavity' dance, Demeter makes a mistake with one of her moves and makes an "Oops." face.
Other mistake: When Crickie is typing the letter for Mushu he has ink on his feet yet when he jumps on the table to wipe off his feet there aren't any ink footprints where his foot was.
Other mistake: After the song 'Love Will Find a Way' when Kovu and Kiara are peering into the water and Kovu says, "We are one," in the reflection the scar on Kovu's face is on the wrong eye. Nothing to do with it being reflected, it was on the eye nearest Kiara, and now it's on the other eye.
Other mistake: At the beginning in England, Radcliffe tells the King of John Smith's death as they discuss war, and the King says they will await the return of John Rolf, indicating Rolf has already left England. It then cuts to the first scene with Pocahontas, which is before Rolf arrives in America, and the friend says that it is a long time since the news arrived of John Smith's death. There's no time for this news to have reached them.
Other mistake: The color of the buttons described by Diderot (and as it can be seen on the schematics he's holding) does not match the actual control panel of the crane. (00:05:00 - 00:06:40)