Continuity mistake: In the scene in the pizza place, the coffee pot's handle moves around between shots, and the design changes completely. Sometimes it's round then triangular.
Continuity mistake: When Janice goes to Livia's mailbox and retrieves the envelope with her disability check, the words "TOTAL DISABILITY" only appear on the check in the close-up, but not in the previous shot. Additionally, the silver screen door is gone between the first wide shot when Janice pulls the mail out of the mailbox, and the next close-up as Janice looks through the mail in her hands (she did not open the screen door between shots).
Visible crew/equipment: After Carmela and Janice apologise to each other, Carmela asks Janice to lower her music, and when Janice closes the bedroom door, lighting equipment is visible at the right side of the screen.