The Crab with the Golden Claws: Part 2 - S1-E2
Other mistake: The newspaper article that features Tintin and Captain Haddock at the end of the episode is a flipped shot, as shown by the text that has been reversed. (00:43:35)
The Losers - S1-E4
Continuity mistake: After the bikers give Marshall his money back, the lead biker doesn't have his hands on the handlebars on the wide shot. His hands then are on the handlebars in the close-up. (00:06:10)