Hey Arnold!

In one of that last scenes, Grandpa doesn't have gloves on, and then he has them on in one scene, but they disappear for the rest of the show.

When Helga picks up Arnold's list, her glove disappears then reappears in the next shot, then disappears again.

Near the end of the episode, Gerald doesn't have his baseball mitt on in a few scenes. He's also missing his regular glove in a scene.

When Arnold is talking to Gerald about Mr. Hyunh while they are having a snowball fight, Arnold doesn't have gloves on, but they appear in the scene and then disappear in the next.

When Helga is talking to Rhonda, her gloves are flesh-colored, then they're back to their normal red color in the next scene. The same thing happens when Helga decides to buy Arnold a skateboard for Christmas.

When Arnold says he can't believe there isn't a single pair of snow boots left in the city, a couple of people disappear when the screen pans out.

When Mr. Bailey leaves his office, he doesn't have his bags with him, then in the next scene he does (although he only has two of them).

Near the end of the episode, Gerald isn't wearing his winter clothes in one scene.

When Arnold and Gerald are shopping for Mr. Bailey, Gerald's hat disappears and reappears a few scenes later.

Right before the commercial break, Arnold doesn't have gloves on, then they appear in thin air.

When Helga is looking for a present for Arnold, first she has no gloves on, then she does the next scene, then she doesn't in another scene, then she does in a later scene, etc.

How did Helga know who Mr. Bailey was? It could've been some random employee closing up, but Helga automatically knew what he looked like?