Sitting Copper Golem Statue Model has duplicated parts inside it

Copper Golem Statue Blocks set to the Sitting pose have multiple duplicated body parts inside it.

To recreate, place any oxidation level of the Copper Golem Statue Block, waxed or not. Then set Gamemode to spectator, scroll with the mouse wheel to slow down spectator movement speed and fly through the Copper Golem Statue Block to see the duplicated parts. most notable are 2 noses and an extra torso clipping out in the back.