Episode Five - S1-E5
Revealing mistake: The mirror over Barnabas' mantel hangs flush against the wall. Yet when he shatters it, the candlestick he throws can be seen to go through the glass instead of bouncing back as it should have done. (00:43:45)
Revealing mistake: In the parking lot shot, one patron of the Leisure Center warns an arriving patron that Brittas is back, prompting the arriving person to reverse their car out of the parking space. However, note the arriving patron's hands - his car was already in reverse before he was spoken to. (00:12:15)
Revealing mistake: Anytime the kids are shown running through the backyard, it sounds very obvious they are running on a wooden set floor instead of real grass-covered ground.
Revealing mistake: When the band is playing the show at the end, JT is supposed to be playing the bass, but anyone can tell he is not, even when the bass sound is used.
The Blue Lotus: Part 2 - S1-E9
Revealing mistake: There's a shot where there's tons of people walking beside the train. The people that walk by repeat as the same people 2 times. (00:29:00)
Revealing mistake: When the holder of the nude seminar's handing papers to Louise, you can see that behind the lectern she's wearing underwear. (00:14:00)
Revealing mistake: When Yoshi says the circus is more fun than tennis, a line on his underbelly is layered on his left arm. (00:04:17)
The Case of the Missing - S1-E1
Revealing mistake: WPC Softly leans on a model building in Rammel's office, causing it to collapse by stages. The wire that is being pulled to make the model collapse can be seen to the right of the model. (00:21:00)
Revealing mistake: The scene where Macduff, Johnson and Diesel are happy because they found Macduff's "button" medal of bravery, watch when diesel jumps up and down. You can the actor's black shoes he is wearing. This also happens throughout other parts of this episode. (00:06:40)
Doug Takes the Case / Doug's Secret Song - S2-E1
Revealing mistake: The framing of this entire episode is such that the edge of the animation cels is visible. Noted on Paramount+.