As Jennifer, Stefanie Powers keeps her fingernails rather short. The fingernails of the hands catching the statue head before it falls to the floor are much longer.
When Jennifer lifts a large ceramic figurine and breaks over a man's head, it reveals a gold artifact hidden inside. The problem is Jennifer wouldn't have been able to lift something that size made of gold over her head. The weight difference would have been noticeable the minute she picked it up.
The victim falls on the table with his head facing to his left. In the next shot, his head is facing to his right.
At the restaurant, Jonathan flubs his line, saying, "I'm stuffed, don't you"?