Continuity mistake: In the diner, after the waitress hands the menus, Mattie drops her backpack twice.
Continuity mistake: Anya places the menu parallel to Julia. Shot changes and the menu is now perpendicular to her.
Continuity mistake: At the diner, Julia leaves her backpack on the floor before she sits down. Shot changes and she is now carrying her backpack again, then she sits down and finally leaves the backpack on the floor.
Continuity mistake: At the woods, when Julia finally accepts going to the diner, she carries her backpack on her right shoulder. A shot later, it's carried on both shoulders. This swaps back and forth.
Continuity mistake: After Mattie finds Julia's teddy bear, Julia tosses the bag of crisps at her. Mattie slides the bag down towards her tummy. A shot later, it's at chest level.
Continuity mistake: Alone in the woods, Julia grabs a bag of crisps from its upper part. Instant cut and now she's grabbing the middle part and moving her hand up to the upper part.
Continuity mistake: When Cassie meets Ben's sister, the passers-by behind have no continuity between shots.
Continuity mistake: After surviving from drowning in the river, Cassandra has a blanket over her back. The blanket is covering her forearm or not, depending on the shot.
Continuity mistake: When Ben asks Cassandra to take her oxygen, his hair is messy. A shot later, it's nicely brushed.
Continuity mistake: When Cassandra is checking stuff inside a luggage, her ponytail is either falling over her chest or not, depending on the shot.
Continuity mistake: Ben tosses a fortune cookie at Cassandra, and aims at grabbing his oyster pail. An instant cut later from a different angle, the pail is already in his hands.
Continuity mistake: At the hospital, the nurse that holds the clip folder has both hands apart or together, depending on the shot.
Continuity mistake: At the hospital, Cassandra is talking to a nurse when a kid shows a drawing he made. Right then, an Afro-American man suddenly walks by out of nowhere.
Continuity mistake: At the hospital, Cassandra is cleaning the top of the soda can with the palm of her hand. An instant cut later, she is opening it.
Continuity mistake: When the skater girl stops in front of the ambulance, there's no car ten meters behind her. Half a second later, a car suddenly appears behind her. Also, the cab is further away, the pillar vanishes and a black parked car appears.
Factual error: The ambulance drives by a Blockbuster with posters for the movie Big Fish. Madame Web is set in the Spring-Summer of 2003 (judging by the trees), but Big Fish premiered in December 2023 and the VHS came out in April 2024.
Continuity mistake: Constance's baby's right arm is uncovered except for the final shot where the shroud is suddenly covering him.
Continuity mistake: When Constance gives birth, a strand of hair on her forehead appears and disappears randomly between shots.
Revealing mistake: When Constance's baby is taken out of the water, she is an obvious doll who doesn't wink or move a single inch. She even cries, but her mouth doesn't move. In some shots, she is replaced by a real baby.
Continuity mistake: The position of the hands on Constance's baby keep changing all the time.
