At lunch, Stacy's soda can moves between shots.
After smashing the phone with the hockey stick, it can briefly be seen a few shots later reassembled on the desk (it is askew, but in one piece).
When Stacy and Barb are talking during lunch, Barb's tray jumps about between shots.
Location of straws at lunch.
When Dr. Keyes gives Stacy a copy of her book, Stacy is seen holding the vitamin bottle Dr. Keyes gave to her earlier. Then in the second shot the bottle disappears, then reappears in the third shot.
Flipped shot during the hockey game (the logos on the jerseys are backwards).
Boom mic at top of screen briefly just as she finishes calling someone then they start dancing in the apartment.
Before Dr Rachel Keyes gives Stacy the gynecological exam, she hands Stacy's panties to her medical assistant, who then puts them directly on the instrument tray. A competent assistant would never do that since it could lead to contamination.