I updated Environmental to their latest update and decided to create a new world to check out the new stuff they added. upon joining in, I was instead greeted by a bunch of raccoons spewing missing textures everywhere. They would continue to follow me unless I went quite far away. Swapping between creative mode and survival mode did nothing, and feeding them would cause them to play their regular eating animation, with the broken particles.

attempting to replicate it on another world fixed this issue, ignore this I guess.