Reloading Minecraft mobs causes their body parts to switch around

Steps to reproduce:

1. Make sure fullscreen and RTX is on
2. Minimize the Minecraft window and reopen it, pressing alt-tab twice is easiest

Observed Results:
There's a chance that some of the entities body parts switch around (head, torso, arms, legs etc. switch). This doesn't always happen and seems random. It also appears that certain entities can change sizes too.

Expected Results:
The entities' model is the same as before.

This does happen to other players on multiplayer but it doesn't appear the same on their screen. This can happen to other players if they leave render distance and enter it again, but mobs do not do this in singleplayer worlds.

GeForce RTX 2060
Intel Core i7-9750H CPU @ 2.60GHz