Visible crew/equipment: As Fran and Grace enter the room, the boom mic is briefly visible at the top of the frame. (00:05:07)
Continuity mistake: Between 15-20 minutes into the show, Fran and her mom are talking in the kitchen. There's a box of Wheat Toasties on the counter. The top flap goes back and forth between folded up and folded down depending on the shot.
The Pre-nup - S5-E20
Continuity mistake: In the scene where Val and Fran are in the kitchen, Fran jiggles her tea bag, the removes it and places it on the napkin beside her. Brighton enters and after a brief conversation Fran returns to the table carrying cream and sugar. She then jiggles and removes the teabag from her cup again. (00:07:00)
Suggested correction: Fran is in the kitchen with her mother, not Val.
Continuity mistake: In this episode, Fran says she is getting married in 19 hours but in the wedding part 2, she is getting married in 24 hrs.
The Honeymoon's Overboard - S6-E1
Continuity mistake: When we first see Fran lying on the beach, she is the only one in sight, but when she sees Maxwell on the beach he is not too far from her, despite not having been in the earlier shot.
Continuity mistake: Just before the end credits start rolling, CeCe is sitting at the kitchen table. Yetta walks towards her with half a cookie in her left hand and the box in her right hand. She moves the box to her left hand so the cookie and the box are both in her left hand. Then she puts her right hand on CeCe's shoulder and suddenly the cookie is in that hand.
The In-Law Who Came Forever - S6-E11
Revealing mistake: When Sylvia is cooking in the kitchen and greets Fran, her sleeve rests right under the frypan. If the heat was really on, the sleeve would have caught fire. (00:06:07)
Other mistake: Pretending to be Max's assistant, Fran dials a number for Bernadette Peters. The conversation is on speaker phone. The assistant says "one moment please." Niles and Fran continue talking and Maxwell comes in. Fran and Niles sheepishly hurry out of the room. Notice how, this whole time, Fran never touched the phone again to turn the phone off. So Max would hear Bernadette Peters and actually figure out Niles and Fran's plan before the episode's even halfway over.