In the pool game on Pleasure Island, the yellow 1-ball turns into a
red 3-ball.
When Pinocchio becomes entangled with the Russian dancer
marionettes, two extra marionettes suddenly appear.
When trying to free Pinocchio from Stromboli's cage, Jiminy Cricket
takes his jacket and hat off and put them on the padlock.
In a later scene, they are no longer there.
Jiminy gets mad at Lampwick and throws his umbrella to the left,
but then as he's leaving to the right all of a sudden he has his
umbrella again.
Factual errors
When Jiminy inspects his image reflected in a copper pot, it is
reflected as magnified. Images reflected off convex surfaces are
reduced in size.