Corrected entry: In the fight scene between Stefan and Maleficent where they are surrounded by soldiers, the first few shots show Maleficent wearing her long coat. However, a few shots later her coat disappears and she is wearing a full body black suit, with no coat on the ground either. (01:21:40 - 01:22:55)
Corrected entry: When the fairies are cooking and Aurora says she is moving out, the amount of blue flour on Knotgrass's face changes between shots.
Correction: That's because it's fading away, and we see this happening, and Aurora even notices it.
Correction: Adding to the other correction: This cannot be considered a continuity mistake, because the fading away of the blue on her face never "changes between shots" as if it's a continuity issue. The fading away of the blue caused by Flittle deliberately occurs (via CGI) within a single shot (01:02:58).
Corrected entry: When Aurora tells Knotgrass, Flittle, and Thistlewit that she is moving out of the cottage, the blue flour that Flittle threw into Knotgrass's face a few moments earlier vanishes almost instantaneously.
Correction: If you watch the scene closely you can see the velvet cape fall off her shoulder. It then falls to the ground.