After Kate Walsh returned to Grey's Anatomy, viewers noticed a potential continuity error involving Addison. During Walsh's guest appearance in the most recent episode, Addison and Amelia (Caterina Scorsone) were seen bonding over a plate of cookies. But while Amelia, who is now sober, paired that with a glass of milk, Addison opted for wine. "Quick question for the Greys Anatomy writers," read a post from a fan on X.