When the buff Chucky hits the other chucky a bit of blood flies through the keyhole and hits Jake on the face where he tries to clean it off him but he smears it around his face but in the next scene the blood is gone.
The photo on the phone that Devon asks Lexy to go back to changes. First it is a shot of a Chucky and you can see his face and part of the front of him. Then it changes to a photo of just his feet in front of a dolls foot.
The check Tiffany takes from Jennifer changes. Before she picks it up you can see that it is fully filled out and there is a black diamond on the left side of it but when Tiff looks at it there is only one line written across the face of the check and the black diamond is gone.
At the 20 minute-ish mark, you can see the wig line on Lachlan's head for Glen's hair.