The truck that splashes Helga says "Green's Meat" instead of "Green Meats".
When Oskar is holding the bowl with paper slips, Arnold's animation loops thrice.
After Oskar was caught having written his name on all the slips, there is no scene showing that they have rewritten them.
Also, there are a lot more paper slips in the bowl than people participating in the Secret Santa exchange.
There's an error with Arnold's mouth when he's outside the Federal Office of Information with Gerald.
It is unexplained how Mr. Bailey knew Arnold and Gerald were 9 years old.
Arnold and Gerald meet Helga in the electronics section of the department store, but they were trying to find snow boots, not electronics.
Helga's handwear is inconsistent throughout the entire episode. She frequently changes between wearing gloves, wearing mittens, and having bare hands. In some shots, her gloves/mittens are incorrectly painted the same color as her skin instead of their usual dark red/brown color.
When Helga approaches Mr. Bailey outside the government building, his bags are not there. They later appear right before he starts leaving.
The shots of Mr. Hyunh in front of the fireplace right before and right after Mai arrives are all reused from earlier in the episode. As a result, it looks as if suddenly, Hyunh changed which hand was holding his pipe.
When Gerald is smiling at the Hyunhs' reunion, there's an error with his blinking.
When Mr. Hyunh says "This is Mai, my daughter!", Gerald is wearing his normal clothes, and not his yellow coat.
Gerald's handwear is inconsistent during the final scene inside the Boarding House. In some shots, he is wearing teal gloves/mittens, and in other shots he has bare hands. Also, in some shots, he is wearing a baseball glove, and in other shots, he is not.
The final shot of the episode has Helga standing in the snow wearing her pink socks. However, when she gave Mr. Bailey the Nancy Spumoni snow boots, she was wearing her brown shoes from earlier in the episode. Did she take them off during the night, and then go out into the cold without them?
In the credits, it says "Animatic Technicans" instead of "Animatic Technicians".
