Rear Window - S7-E13
Visible crew/equipment: After Dan grabs the beer during commercial break, a boom mic swings in at the top of the screen for a moment. (00:03:05)
The Birds and the Frozen Bees - S7-E23
Continuity mistake: Roseanne and Darlene are sitting on the sofa discussing Darlene getting back together with David. The cuff on the sleeve of Darlene's sweater is partially turned down, and in the next shot it's neatly turned up.
Continuity mistake: Roseanne brings in a plate of sandwiches after Dan brings home the new couch. She places the plate on the the small stand in front of her. Between shots, the plate switches to the stand in front of Dan and then back to in front of Roseanne.
Halloween - The Final Chapter - S8-E5
Continuity mistake: Roseanne becomes pregnant at the beginning of Season 7, and it is before the Halloween and Thanksgiving episodes, so she is in her first trimester during the holidays. However, Roseanne does not give birth until the following year in the Season 8 Halloween episode. Her pregnancy has lasted for well over a year.
The Last Thursday in November - S8-E8
Other mistake: Roseanne gave birth to Jerry on October 31st. That Thanksgiving, on November 21st, Jerry was only 3 weeks old. However, he is side by side with Andy sitting in a high chair on his own, sitting straight up, holding his own head up.
Factual error: 1/4 through the show, Darlene, Becky, David and Becky's husband, Mark, are playing Scrabble. Mark puts down "oxygen" on the board in the lower corner with the "O" covering the triple word square. David is counting up the score and says the "X" is on the triple letter box, and totals the points up to 99. The problem is there is no triple letter box next to the triple word box or even on the outside edges of the board.
Construction Junction - S8-E16
Continuity mistake: Stumbling in the dark bedroom, Dan rips off one of the bedposts, and he is holding it, while Roseanne turns on the light. Then, in the next shot, suddenly it's back on the bed again. (00:07:30)
The Wedding - S8-E23
Character mistake: When Roseanne, Darlene, Jackie, Bev, Becky, and Nana Mary are dressing for Darlene's wedding, Nana Mary comments that all of them were pregnant when they married. However, Becky, was not pregnant when she and Mark eloped and they never had children together. Roseanne was not pregnant before marrying Dan. When the series began, Becky was 13 years old and Dan and Roseanne had been married 15 years.
Home for the Holidays - S9-E12
Revealing mistake: When the family is eating the Christmas cookies, look at the top of the screen. In the kitchen, you can blatantly see where the top of the kitchen actually ends, revealing gray panels. The Conner's ceiling never went up this high, so it is definitely set material.
Continuity mistake: When a depressed Roseanne emerges from her bedroom after Dan has left her, she tells Nancy and Leon that she wants to turn over her and Jackie's shares of the restaurant to them. She says she wants Nancy and Leon to experience the same sense of accomplishment that she and Jackie felt when they first opened the business. However, Roseanne seems to have forgotten that it was Nancy, along with her, Jackie, and Bev, who started the restaurant.
Continuity mistake: In the episode Terms of Estrangement Part 1, Roseanne goes for an interview at "The old Wellman Factory" which was closed down and turning into a printing press. Then, in the episode Lanford's Elite, Roseanne and Jackie team up with Edgar Wellman Jr. to try to save the factory from shutting down by paying off past due debts and making all the current employees part owners.
Into That Good Night: Part 2 - S9-E24
Visible crew/equipment: When Bev hears "movement" on the baby monitor everyone rushes toward Roseanne on the stairs, and just as Roseanne comments that they're all "scary enough individually," we can see the second camera appear at the left side of the screen. Then, when Bev walks through the bedroom's doorway, there's movement of the boom mic at the top left corner of the screen, and when DJ turns on the camcorder the end of the set is visible from the POV of the camcorder.
Continuity mistake: Harris was born in 1997 (in season 9) so in 2018, that makes her 21 years old, but in the 2018 revival and its spinoff "The Conners", she is depicted as 17-18 years old and attending high school.