The Case of the Libertine Belle - S7-E2
Continuity mistake: When they bring out the cake, all the candles are lit, then one candle is lit, then none, then back to one again with no one touching the cake.
Continuity mistake: In earlier episodes we are told Blanche's middle name is "Marie", such as in the episode, "Wham, Bam, Thank You, Mammy" where in her ex-mammy calls her by her full maiden name (Blanche Marie Hollingsworth). But in this episode, she brings out her diaries to try to locate if she slept with Rose's husband Charlie, and the intials are B.E.D. - which stood for Blanche Elizabeth Devereaux.
One Flew Out of the Cuckoo's Nest (2) - S7-E26
Continuity mistake: When Sophia goes around taking pictures of Dorothy and Lukas kissing, she accidentally takes a picture of Rose and Blanche hugging. When she takes the picture, they are still hugging and see her afterwards. When the picture develops, they are both staring at the camera with shocked looks, but the picture was already out when they turned around.
Journey to the Center of Attention - S7-E19
Continuity mistake: In the first scene of the show, Dorothy has a bowl of popcorn on her lap. The amount of popcorn changes between shots. At one point it's overflowing, and at another it's about half full.
Continuity mistake: When Dorothy, Blanche, and Sophia are sitting in the reception area arguing with Kirsten, Sophia sits forward and says she loves Rose as if she was one of her own. When she sits forward, you can see the beads on her purse handle are strung tightly. When she leans back in her seat, you can see big spaces between beads, as if some have been taken off.
Answer: Ice makers were a new invention, advertisement purposes.