Plot hole: In "The Conners" premier, Dan solely blames neighbor Marcy Bellinger for Roseanne's death after finding a bottle of opiates with Marcy's name on it. He only relents after Darlene shows him additional opiates that other people gave Roseanne and were hidden around the house. However, in the Season 10 reboot of "Roseanne", Dan had previously discovered and confronted Roseanne about her multiple opiate stashes, including one bottle with Marcy's name on it which he read aloud.
The Conners (2018)
1 plot hole in Keep on Truckin'
Starring: John Goodman, Laurie Metcalf, Sara Gilbert, Alicia Goranson
Genres: Comedy
Continuity mistake: As Mark sits down next to Dan and reaches towards his backpack, in the very next shot he's pulling out a history book, even though he has not gotten anything out of the bag.
The Dog Days of Christmas - S5-E10
Trivia: Jane Curtin, who plays Louise's mom, is only six years older than Katy Sagal (Louise).