A tipsy Mabel Jellyman takes her hand off a champagne bottle twice after setting it on the table.
The "moonlight" in the window of Joe's bedroom goes off a beat before Leo turns on the lights.
A shadow of the boom microphone is visible to the upper left of the front door of the speakeasy when Maudie first arrives.
A shadow of the boom microphone moves across a column to the right after Leo keeps Iris from running after Joe, as he is taking Jerry out of the speakeasy to get a cab.