When Reynolds jerks open the door of his apartment to let the grandmother leave, he breaks the chain. After a bit of dialog from the kid, he shuts the door and latches it with the (now unbroken) chain.
When the main characters are chasing a motorcycle they pass a couple of cars. In a next shot, they pass the same cars again.
After Nick and Devon leave the biker bar, Nick is seen with a bloody mouth. In the next camera shot, the blood is gone and he is fine.
In the beginning when Devon and Sanchez are following Nick McKenna while he is chasing Quintero and Chu by car, Nick uses his car door to slam Chu to the ground. Chu leaves a big dent on the door which is visible when Nick opens the door and gets out. In the following shot when Nick enters the car again the dent is gone.
Numerous times when Nick is protecting Devon from the gangsters in his biker outfit, his rear end can be briefly shown when he falls or bends down. When Devon and Nick land and hide in the boat, after the gangsters leave, they emerge and mere seconds before the shot changes to Nick sitting in front of the boat, his rear end is visibly shown (to which Devon appears to be glancing at).
Shadow visible next to Nick and Devon in boat chase.
During the scene with Burt Reynolds (in a car) chasing a henchman (on foot) Burt drives through multiple fences and backyards. Just as Burt's hitting the last fence, he shouts "End of the line!" Immediately after that, in a side shot of the car, you can see a crew member bracing himself with his arm on the back of the driver's seat.
The police hear Devon's information even after the phone line is yanked out in the warehouse.