While playing pool the level of Joel McCrea's beer goes from half-full to almost full.
After George (Joel McCrea) hears Claire (Jean Arthur) scream, he goes into the room she's been taken to and sees a child's coffin, with Claire lying on the floor. In the next shot Claire is still lying on the floor, but the child's coffin is nearly obscured from view by flowers placed in front of the casket and draped over it.
When George and Claire go into the Press Club after waiting in the park, the tall clock against the wall reads 3:30 (AM). Then George goes to the newspaper, gets bawled out by Bane, the managing editor, and goes back to the Press Club. The clock still reads exactly 3:30 as before.
On the playbill shown before the performance of the play "Fury's Road", the producer's name at the top is "Gregory Blackton". That should be Blackton Gregory (played by Reginald Owen), as in the credits, and as spoken later by Claire (Jean Arthur).
Upon being hired, George sits down at a typewriter, picks up two sheets of paper together and slides them both into the carriage.