Revealing mistake: The stunt double for Bradford is rather obvious when he's in his wrestling uniform.
Continuity mistake: When Phoebe summons her suspects who she thinks might be the Rebel Raptor and when only Gideon showed up, he is holding red and white flowers in a bouquet, but in the next shot, he is holding yellow and purple flowers.
Continuity mistake: When Max and his band are at Splat Burger in the beginning, the table that the band is sitting at changes. When Max introduces the band to Wolfgang, they are sitting at a booth near the door. When Max gets up to play his song, they are sitting at a booth in the middle of the restaurant. When Max is covered in tomatoes, the band is at the booth by the door again.
The Girl with the Dragon Snafu - S2-E23
Continuity mistake: When Hank gets frustrated, he pulls the doorknob off the new bathroom. When he is standing on the rug, we can see that the doorknob is back on the door.
Welcome to the Family Part 1 - S2-E24
Revealing mistake: When the father is launched down the stairs he's very obviously been replaced by a dummy. Watch how his left arm bends awkwardly.
Welcome to the Family Part 2 - S2-E25
Revealing mistake: When the family releases Chloe's bubble ability for the last time in the episode the bubble machine is visible.
Suggested correction: There is no bubble machine visible.
Welcome to the Family Part 2 - S2-E25
Other mistake: Throughout this episode, Max is captured by villains and is about to be bitten by a vat of hermit crabs. It's pretty obvious that between every scene of Max, instead of the platform lowering, it's just getting higher. Clearly, Max should've got to the hermit crabs about halfway through the episode.