Continuity mistake: At the end when the children learn that their dad is their new baby sitter, look at Chris' tassels on his coat from when they get to door to when Daniel says 'Go get your stuff' and he runs up stairs - between shots, his tassels are both hanging down, then hanging to the right, then hanging down etc. indicating this scene was shot at least twice.
Continuity mistake: In the scene where the social worker is at Mr. Hillard's house and his so-called "sister" (Mrs. Doubtfire) is trying to find a face in the kitchen, one moment the wig is all messed up from being caught on the door. In the next scene, where she is looking in the fridge to find the face, her wig is perfectly in place.
Continuity mistake: In the scene in the kitchen while Daniel is looking for a face, his robe is not closed completely at the top, but as soon as Mrs. Stelner enters, the robe is done all the way up and quite tightly. After the face cream in the coffee, Mrs. Doubtfire leaves but quickly sticks her head back in the kitchen and her robe is again loose at the top.
Continuity mistake: In the scene where Mrs. Selner inspects Daniel's apartment after meeting Mrs. Doubtfire, Daniel is tidying up the place a bit. He picks up some articles of clothing, and then goes off to get his "sister". Before leaving down the hall, his pile of clothing is completely covered by a blue skirt or dress. But the next shot shows Daniel with a white article of clothing on top.
Continuity mistake: When Daniel is in the bathtub, speaking in a German accent while on the phone with Miranda, he asks her how many children she has. At this point Daniel's chest is clean. It then cuts to Miranda who says, "I have two girls and a boy." In the next shot, however, Daniel's chest is suddenly covered in bubbles.
Continuity mistake: When Chris and Lydia discover that Mrs. Doubtfire is really their father, he explains Uncle Frank's and Aunt Jack's part in it. When it cuts back to Lydia, she has a long length of hair down the front of her right shoulder, but in the next shot, when she says, "It's really you in there," the hair is suddenly behind her shoulder.
Continuity mistake: In the scene where Daniel and his kids are having dinner, when he's 'domesticized', the first pan shot is mirrored, because his daughter is looking to her left to congratulate him, but in the next shot and all the ones after that, he would be on her right, and the table would be flipped.