Black Cauldron Glitches

Here are some bloopers from the Disney animated feature The Black Cauldron:

Fflewddur's harp is missing when he falls down the hill.

"See, Master? Piggy's footsteps," says Gurgi, even though we've been seeing those prints for five minutes already.

Some of the Fair Folk swap voices.

Doli sits on Fllewddur's hat in close-ups but is not visible in far shots. More...