Continuity mistake: When Stitch arrives at the hula class, the conga drum on the right suddenly disappears. Then it reappears with Lilo on top only to disappear again a shot later.
Continuity mistake: When Stitch wakes up from his nightmare, the window behind him is about half a metre away from the easel. However, when Lilo throws her book out of the window, it's suddenly only about ten centimetres away.
Continuity mistake: When Lilo wakes Stitch, there's a single piece of paper stuck to the wall behind her. When she starts tossing things around, there are suddenly two sheets—one on top of the other—plus a star.
Continuity mistake: The piece of scotch tape at the bottom of the Head Shrink diploma changes position between shots.
Continuity mistake: The award ribbon on the Head Shrink diploma swaps from being next to the letter "K" to positioned between the two words.
Continuity mistake: When Jumba grabs the toaster and tells Pleakley to get rid of David, the flower-petal design on the toaster suddenly vanishes.
Continuity mistake: When Pleakley nags about the toaster, Nani takes a box from the grocery bag and places it on the counter, while there's a second box inside the bag. As they continue talking, the box on the counter suddenly disappears in the next shot.
Continuity mistake: When Pleakley shows Nani the toast, the knife he holds disappears between shots.
Continuity mistake: When Pleakley sets the toaster on the counter, the next shot from the opposite angle shows it already plugged in.
Continuity mistake: When Lilo is rehearsing at the hula class, her duffel bag disappears.
Continuity mistake: When Stitch starts to put a bunch of sunscreen on people at the beach, there is what seems to be a small blue radio on the sand. In the next shot, not only does it change position, but its antenna is missing as well. The antenna reappears when the radio is shown again two shots later. (00:36:19)
Continuity mistake: The loudspeaker on the stage disappears between shots.
Answer: It has to do with his molecules breaking down. In this film, he needs to have his molecules "charged". They had not broken down enough in the first film to cause the glitch.
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