The Engagement (a.k.a) Pilot - S1-E1
Other mistake: When Dorothy explains to Rose about her ex husband Stan she mentions he is a 65-year-old man. If they were in high school together and she's in her 50s wouldn't that mean he would be 50s as well?
The Engagement (a.k.a) Pilot - S1-E1
Other mistake: When Dorothy and Rose go back to Blanche's bedroom to ask her about her engagement to her BF Harry, they use the entrance that is normally used for the lanai. Possible set change.
Answer: Ice makers were a new invention, advertisement purposes.