When Wednesday throws love dust on Robespierre, it covers his face and shoulders. After that in all the wide shots only his chest is dusty and his face has been cleaned, while in the closer shots his face is dusty again.
When Wednesday asks if there have been any phone calls for her, she has her arms at her side. In the next shot she has her arms folded.
When Fester faints Gomez pours water on his head to bring him back around, soaking both Fester and the rug. Grandmama breaks a vase on his head, and in the close-up of Fester coming around a large portion of the rug is suddenly dry.
Mrs. Courtney is on the phone accepting Morticia's invite to tea and is supposed to be holding the front page of the newspaper (folded in half) with the article about Abigail Adams. (we see the title when they show the close up of the paper). However just before she answers the phone it is clearly a different paper because there's less room at the top title area and we should see half of the title (The Daily Chronicle). Also she is holding the paper up when she glances at it while talking but the close up shows the paper setting on a cushion (perhaps of a chair) not being held up by her.
When playing cricket Gomez hits the first pitch and the ball bounces back and settles on the floor behind him by the Indian and bookcase. He swings but misses the second pitch and the ball knocks off a piece of the cricket bat stand and rolls away leaving the piece on the floor behind the stand. Then Morticia asks Gomez if he's sure this is the way the game is played before she throws the third pitch. When he answers her we see the first ball has disappeared and the piece of the stand that was behind it is now further to the left closer to the Indian.
The ticker tape machine can be heard clicking away but it isn't feeding out any when they pause it in their hands.