Favorite Son - S1-E6
Continuity mistake: At the start when the security guard is attacked, the number of papers thrown about changes from 5+ to 3. (00:02:40)
Favorite Son - S1-E6
Continuity mistake: When Lucifer meets with Chloe for the first time, Chloe has her arms by her side in one shot and on her hips in the next. (00:06:50)
Favorite Son - S1-E6
Continuity mistake: When Lucifer is about to leave Linda's office she stops him and raises her hand in front of her chest. When the shot changes, her hands are not visible even though they should be. (00:17:40)
Favorite Son - S1-E6
Continuity mistake: When Dan confronts Mazikeen over leaving him in Chloe's apartment, he has his arms outstretched in the front shot and down by his side in the reverse shot. (00:21:20)
Favorite Son - S1-E6
Continuity mistake: Near the end, as Lucifer is bearing down on the biker asking who took his wings, the Biker stumbles and has both hands behind him. When the shot changes his left hand is raised. (00:33:40)
Favorite Son - S1-E6
Continuity mistake: The way Trixie grabs the chocolate cake differs from raising her hand up to Dan and just holding it out in another shot. (00:37:20)
Favorite Son - S1-E6
Continuity mistake: When Dan hands Trixie the chocolate cake, he holds it with 1 hand then two depending on the camera angles. (00:37:20)
Answer: Boo Normal and Once Upon a Time were going to be part of season 4, then the show got cancelled (before being picked up elsewhere). As such they were added on to the end of season three as "bonus" episodes, hence the continuity being off. But not really a mistake, just a quirk of broadcasting. Boo Normal was originally going to be between the episodes "High School Poppycock" and "Infernal Guinea Pig" in season 3 before being slated for season 4, presumably because aside from the point you've raised, it was fairly flexible, continuity-wise.
Jon Sandys ★