Revealing mistake: When Genie is on the top bunk getting ready to fall asleep, the shadow of an owl sweeps across the bedroom wall. But in mid flight the owl's shadow abruptly stops moving. (00:29:50)
Revealing mistake: When Webby and the others are standing outside of the window watching Scrooge pace back and forth in anger, she casts no shadow on the patio. This is revealed when she moves left at one point. (00:28:50)