When Adele is arguing with Chris about his not buying her a radio, the amount of ham on the table changes between shots.
When Adele first questions Chris about Katherine March, the position of the knife he is holding changes between shots.
In the diner, as Kitty is talking to Chris, after he comments on his age, she reassures him by placing her hand on his. The shot changes, and her hand is already on the table as he picks his up to put on hers.
Early in the movie, Chris walks another man to a bus stop in the rain. As they stop, he spins his umbrella. It can be seen that a portion on the left is broken. In the next shot, the umbrella is intact.
Johnny pulls up to fire plug in the new car. The 4" discharge port is pointed off to the left, 45º to the curb. Later when a drunken Johnny arrives the hydrant has rotated with the large discharge port now parallel to the curb and the 2 1/2" coupling perpendicular to the curb.
When Kitty poses for the self-portrait, she is standing; the finished portrait shows her sitting. However, it is possible the portrait was not completed in one sitting.
When Chris is in the bathroom showing his painting of the flower to his co-worker, you can see the shadow of what turns out to be his wife, along the bottom of the closed door for nearly 5 seconds before she burst into the bathroom.
The story takes place in 1934, but all of Margaret Lindsay's and Joan Bennett's clothes, shoes, and hairstyles are strictly in the 1945 mode; fashions had changed considerably during the intervening eleven years. The featured taxicab is a late-1930s vintage, about three years too new.
After Chris finds out that Kitty is selling the paintings as hers he is OK with it and she ultimately ends up with fancy clothes, jewelry and a new car. Surely Chris would arranged to recover at least the amount he had embezzled and returned it to avoid the subsequent disgrace, possible arrest and discharge from his cashier's position.