Incorrect/invisible mob/spawn eggs

Spawn eggs have the incorrect texture (old texture), like the chicken, cow, pig, sheep, and more, some spawn eggs have no textures like the new Nautilus and Zombie Nautilus, Camel Husk and parch spawn eggs. Not just the spawn eggs that have no texture but also the actual mobs have also no texture making it invisible. The copper golem mob and spawn egg also have this issue, including the copper golem statues.