Dave and the Teenager - S11-E17
Other mistake: When the Harris family moves into an apartment across the hall from David and June Nelson, their 14-year-old daughter, Betty, develops a crush on David. When David and June step out onto their outdoor patio, they see Betty watching them from her own patio. This could not be possible.
Other mistake: As Clara and Harriet are driving home from an antique store, the car runs out of gas. In the close-ups, the car has no windshield.