Continuity mistake: When Bob Conway meets with the High Lama, there is a pillar candle atop a 2 ft tall ornate candle holder, on the table beside the Shangri-La founder. The style of the tall candle holder is actually completely different between the High Lama's side shots and close-up; the height of the wide candle greatly differs as well.
Continuity mistake: When the Lion says, "Now, to an all musical program" he raises his arms and his shadow is behind him up on the curtain. But without him moving, it cuts to a far shot, and suddenly his shadow is on the ground beside him with one arm of the shadow up on the curtain. (00:02:20)
Continuity mistake: When Goofy searches through the dresser drawers one of the ghosts causes trouble, then Goofy breaks through the top of the dresser and winds up trapped inside, but when all four ghosts appear the dresser top is perfectly fine and that damage has vanished. Also, two of the drawers (one large and one small) fall out of the dresser, but as the four ghosts are pushing the dresser those two drawers have reappeared in their proper places.