When Monica is escaping her aborted attempt at entering the Hex, the technicians' two laptops have masked branding, with stickers over the logos, but in earlier shots there were no stickers and the HP logo was clearly visible.
While Monica is preparing to re-enter the hex she and Woo mention Darcy being in the hex; however, they didn't see Darcy enter because they were already driving away when it happened. However, since they knew Darcy was handcuffed to a truck, and thus not able to run away, they could reasonably assume that Darcy entered the Hex.
Neither Woo nor Monica knew that Darcy was handcuffed to a truck. That happened after they had driven off to enter the hex. They could not possibly have seen it happen as they were well inside the hex at the time. Therefore this is a goof.
Neither Woo nor Monica knew that Darcy was handcuffed to a truck. That happened after they had driven off to enter the hex. They could not possibly have seen it happen as they were well inside the hex at the time. Therefore this is a goof.
As Monica is preparing to go into the Hex, the two technicians are seen to be using HP laptops. The close up of one of the laptop screens shows Panasonic branding.
The location of the agent/clown chasing the truck changes between shots.
When Monica Rambeau is about to enter the Hex, she first is shown with a cap she is wearing under her helmet, but when she gets closer to the hex the hat is suddenly gone.
During Wanda and Monica's confrontation, before Agatha intervenes, Wanda has subconsciously frozen everyone else in place in the background. However, at 24:23, one of Wanda's neighbors, a young woman, suddenly sways and puts her hand on her car, despite the fact that she's supposed to be frozen in place. It's possible that the actress lost her balance in trying to stand still and placed her hand on the car to keep her balance, and the editors didn't catch this mistake.