Other mistake: In the scene where Mark Scott is arriving back from being taken into custody by Two River Bend police, the unit's emergency number is a different one, not 9-1-1.
Other mistake: Sy enters the SavMart (after being fired) with a large photo envelope in his hand, and the boss who fired him confronts him about going elsewhere to process his photos, and they get into it. Then Sy pushes past him, and in the next shot, walks right up to the photo counter, when in all previous scenes, the photo lab was at the back of the store.
Other mistake: She's holding a Beretta M1951 9mm single action semi-automatic handgun equipped with a suppressor. She takes a shot, and the hammer is full forward. For the gun to fire the hammer has to be all the way to the rear, and after it's fired, the slide would eject the spent cartridge and grab a new one and the hammer would be to the rear. It's not a cowboy revolver where the hammer has to be cocked every time to fire. (00:54:00)
Other mistake: When Jim, Selena, Frank and his daughter enter the supermarket, you can notice all the fresh produce (apples, carrots etc) looking fresh. This virus has been going on for a few days now, and supermarkets get their fresh produce out immediately. After 10 days or so, give or take, the fresh produce shouldn't be looking this fresh. (00:46:00)