Goofs

The hole in the plank into which Pinocchio sticks its nose is not seen when it dances.

When Pinocchio is playing pool, the balls on the table constantly move around between each shot when nobody has touched them.

Geppetto made Pinocchio to resemble his late son but does not choose to give it the same name.

Geppetto does not have to give the puppet the same name as his late son, there is zero obligation for him to do so.

Geppetto's cuckoo clocks, which feature a collection of Disney characters: Woody and his horse Bullseye from the Toy Story series, Donald Duck, Roger Rabbit and his wife Jessica kissing from Who Framed Roger Rabbit (1988)) Archimedes the Owl from The Sword in the Stone (1963), The Lion King (1994), Princess Aurora and Maleficent from Sleeping Beauty (1959), Dumbo (1941), and Snow White and the Seven Dwarfs (1937) would have not been created or featured in 1883 since those 20th century characters created by Walt Disney would not been created yet since they didn't exist in the 19th century. But these are deliberately included as Easter eggs; it's not uncommon for Disney to include references to their other films/properties/characters/etc. without regard to time frames and the like.

Cleo the Fish is seen with closed eyes/blinking several times throughout the movie. Fish cannot close their eyes/blink.

But of course, this is a "magical" world where animals talk... and blink.

Obvious CGI when Geppetto and Pinocchio are on their way out of the sea monster.

Obvious CGI when Geppetto or Stromboli hold Pinocchio in their arms: no real "green screen" object is being held and the hands are moving around the wooden puppet's body.

When Lampwick is talking to Pinocchio on the coach, his eyeline is way off, actually looking behind where Pinocchio's head would be.

When Pinocchio is locked in a cage, he lies to Jiminy Cricket. In one part, he tells Jiminy Cricket he wanted to go to school, which is actually true because he wanted to try out school earlier in the film, despite telling part of the truth, but his nose still grows anyways.

There is no explanation as to why Geppetto would not make a new clock to sell it to Signore Rizzi instead of being annoyed by his request.

The heliocentric theory was widely popular in the 1800s when this story is set and yet Geppetto tells Pinocchio that it is the Sun that resolves around the Earth. Which may be deliberate to reinforce that Pinocchio SHOULD go to school to learn these things, something Geppetto may not have had the chance to do.

Geppetto spots "the wishing star", which is immobile but traditionally people wish when they spot a "shooting" star.