In the diner, the spelling of "SODA FOUNTAIN" on the window behind the actors switches from "SODA FOUNTIAN" to the correct spelling between shots.
The sweat stains on Zero's shirt disappear suddenly while he talks to Arlo.
When Zero puts down the tuna can it's at a slant, and when the camera goes back to it, it's lying flat.
When Zero and Gloria go to her apartment, the front door and its locks and doorknob are clearly shown. However, the chain lock for the door is missing the entire chain.
When the camera tilts up in front of an ambulance, the dolly and camera can be seen for about a second, reflected in the ambulance's windows and doors.
A shadow of the boom mic is visible in the early kitchen scene.