When Ross Alexander takes Anne Nagel home, two signs indicate that it is the Carlton Arms Apartments, and it's there where he is beaten up. After the beating there is a shot of a news article which states the beating occurred in front of the Dawson Arms Apartments.
When Steve kicks over Slugs sitting in a chair, Slugs has a box of candy in his lap as he goes over backwards. In the next shot, before he hits the floor, the spilled box of candy is already on the floor behind him, above his head.
At the beginning of the film, when Kent goes into the office and greets Linda at her desk after she's done singing, a shadow of the boom microphone can be seen moving on the wall behind her desk, upper left.
After Kent's "disappearance", as the station manager is leaving his office, a shadow of the boom microphone can be seen moving down the wall to the right of the doorway.