When Pinocchio runs through the door after being scared by Shrek, a small gap is seen above where his head went through. However, when the camera cuts to the other side of the door, the gap is no longer there but is immediately created when a small piece of the door falls off.
When Shrek returns to his house and the others try to scare him, the Three Little Pigs can be seen standing behind Puss In Boots who is in front of the door. However, as the camera then cuts around the house focusing on the individual characters, the pigs are seen standing on and in front of Shrek's armchair.
When the other characters attempt to scare Shrek, the Three Blind Mice are seen standing on a small round table with a jar in the middle which is placed on the floor in front of the door. Later in the film, when Shrek wonders where the mice are, they are shown to still be on the table. However, the table itself has moved and is now next to one of the curtains.
Gingy takes off his gumdrop buttons, and tells Sugar to get them. When he runs away, his gumdrop buttons are on his body again.
In the short film, The Ghost Of Lord Farquaad, Dragon killed Lord Farquaad's ghost. But in this short film, Pinocchio said that Castle Duloc was haunted by Lord Farquaad's ghost, and Shrek told Donkey that they were going to wait for Lord Farquaad's ghost.
After Shrek finishes his story, Pinocchio claims that it wasn't him Shrek was talking about. Yet when Shrek shows him his 'conscience' he screams and runs away; indicating that it was him. Therefore, when Pinocchio said 'Uh that wasn't me. I've never had any bugs in my head', he was lying. Therefore his nose should have grown when he said it; as it did near the beginning of the film when he said 'Hey! I worked hard on this costume!'