After the dragon grabs a couple of Visionaries, Galadria runs and you can see wearing her helmet, but in the next shot the helmet is gone.
When Cindarr is captured, he is holding his Power Staff, but when the dragon throws them into its mouth the Staff is nowhere to be seen.
When the Spectral Knights arrive at the Shrine bearing the Dragon's Eye, Leoric's Power Staff is missing, but in the next shot, there it is again.
After the Spectral Knights escape the prison, Arzon is colored Red and Blue in one shot.
When a Visionary transforms, his animal totem jumps out of his chest plate and the image of the animal vanishes before the knight disappears, but when Darkstorm turns into the mollusk, the symbol remains on his plate.
Witterquick transforms to catch the Dragon's Eye passing by Darkstorm, but then later Darkstorm transforms into a mollusk and jumps in Witterquick's way, even though he has already passed him once before.
In the shrine both Reckon and Mortdredd are carrying staffs even though these characters are not equipped with such items.
Arzon was captured twice by the dragon.