Throughout the film, especially in the first half, the hairstyle of Naomie Harris (Alicia) changes between two distinct styles on the side of her head.
At 1:02.28 Malone comes down the hallway gun drawn. Behind him, a door indicates the number 66. In two steps the door has no number.
The NOPD police vehicles have no unit numbers on them.
Despite New Orleans being in Louisiana, rather than California, police radio transmissions refer to California Penal Code sections 187 (Murder) and 211 (Robbery).
The New Orleans Police Department badges incorrectly read PDNO, instead of NOPD.
In the New Orleans Police Department, as in most other agencies, new police officers must complete at least the first 16 weeks at the department with a Field Training Officer (FTO), and, although they can have multiple FTOs assigned to them, they are not allowed to take their FTO's shift for them or, to even work a double shift in the first place. So there's no way Alicia would have been paired up with Ofc. Deacon in the first place.
While waiting in the squad car, West witnesses someone attempting to break into a car using a Slim Jim, once she scares him off, the camera pans over to the car, and the window is already partially down. There would be no need for a Slim Jim if you can just reach inside to open the door.
When two police officers in their car attempt to stop and interview Alicia at the beginning of the film, the driver shout "Up against the wall," but there is no wall nearby. They throw her against a metal fence.
There are no amateur corrupt cops and, as such, there's no way whatsoever, a corrupt cop would take a rookie like Alicia, anywhere near a clandestine meeting with other crooked cops.
When two police officers in their car attempt to stop and interview Alicia at the beginning of the film, it is supposedly seen through a dash cam, but it is clearly the film with time and a few numbers added Early on when in the upper right corner. This could not be dash cam footage as it is missing a lot of pertinent information.
Early on when Officer West has the exchange with the male friend of the mother outside the convenience store, the male sees Officer Jennings outside the store door, and the latter places his hand on his gun. This is an unusual motion as there was no direct threat of violence.
Towards the end of the film when Mouse closes the door to the body cam room, you can see the camera and crew reflected in the window.