After the dance number with Jane and the three guys with serving trays, they place the trays behind him and the sticks on the bottom they held while dancing were clearly visible, but cut to the next shot and the trays are flat on the floor.
The cop says Jane's apartment's address is 1364 Quinlan. There is no Quinlan street in West Hollywood or anywhere else in Los Angeles County. However, this is not a goof as the movie is a work of fiction, and it is common to use fictitious locations in stories and movies.