Continuity mistake: When Ezekiel points the gun at Constance, he holds the gun with one or two hands depending on the shot. This swaps back and forth.
Continuity mistake: Constance takes the umbrella away from Ezekiel by grabbing the shaft. An instant cut later, she is grabbing the handle.
Continuity mistake: When the movie begins, the way Ezekiel holds the umbrella handle (higher or lower) changes between shots.
Continuity mistake: After Constance tells Ezekiel that "spiders supercharge their cellular structure," the camera strap over her elbow moves upwards towards her neck. This changes back and forth all the time.
Continuity mistake: When the movie begins, Constance's hair is falling loose on her face when she is about to take the picture. When she stands up, it's fixed and only a loose strand of hair falls. This changes back and forth.
Audio problem: When the movie starts, Ezekiel says, "I agreed to provide security to you because I thought you were close to finding the spider," but his mouth is closed.
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.