Continuity mistake: When everyone is inside the Museum, Carl offers a Cherry Flavored Fruit Chewy to Cindy. She jumps at it and takes a bite, then clears a stain on her lips with a handkerchief, which she then drops. Carl bends down and picks it up, and then Cindy jumps with a boost from Carl. But in the next shot of Carl, he doesn't have Cindy's handkerchief.
Continuity mistake: In the Great Egg Heist, When they arrive at the Museum, Jimmy gives everyone shishkabob-shaped earplugs for Libby's scream. But in the next shot, if you look at everyone's ears, there are no earplugs. Also, in the next shot, next to Libby you can see Carl putting his hands over his ears. This is impossible because the pointy ends of the earplugs would stab Carl's hands.
Continuity mistake: In the episode "Men At Work", In the end, Jimmy is trying to destroy that flying burger place. In one shot his computer shows that it has already destroyed pizza clown, but the next shot switches to the burger place, destroying pizza clown after it has already come on the computer as it being destroyed.
Audio problem: In the episode where the Wheezers obtain super powers, at the end of the episode, they are all singing their "Sitting and Singing" song surrounding the flaming duck. When the camera cuts to Carl putting his glasses on, the song can still be heard, but everyone's mouth just keeps saying "Standing, and standing, and standing," even though there are more words heard than just that.