Summary:
Due to the vex's model change in 1.19.50.24, the vex is no longer displayed correctly in the following resource packs:

• Adventure Time
• Chinese Mythology
• Egyptian Mythology
• Norse Mythology
• Steven Universe
• Plastic
• Toy Story

It's likely that all official resource packs are affected, but I don't have all of them, so I can't check.

Steps to Reproduce:

1. Open a world with one of the resource packs listed above enabled
2. Spawn a vex and look at it

Observed Results:
In the Egyptian Mythology, Norse Mythology, and Steven Universe packs, the vex is now the same size as the player.

In the Adventure Time, Chinese Mythology, Plastic, and Toy Story packs, the vex's texture looks distorted.

Expected Results:
The vex should be smaller than the player, and its texture should look normal, like in 1.19.41.

Screenshots: