Corrupted textures for all remodeled mobs

[1.12]
Partner Rank:
1

Partner Team Reporting:
Everbloom Studios

Verification builds:
MC BUILD 2039725 V1.12.2.0

Summary:
Corrupted textures for all remodeled mobs

Impact:
The theme of the map is completely lost and may as well be unplayable

Repro Steps:
1. Open up a fresh copy of A Nightmare in Candyworld
2. Summon the following mobs to reproduce
Witch -King Candy
Bat and mooshroom -The Sugar Rush Fairy
Zombie Pigman -Lord Sugar Bones
Llama -Sweet Tooth
Villager -Old Man Snickety
Horse -Citizens
Zombie & Husk - Candy Soldiers
Skeleton - Candy Cane Archers
Spider - Elite Candy Soldiers
Zombie Villager - Gummy Bears
Creeper - Explosive Chocolate Bunnies
Silverfish - Gummy Worms
Vex - Banshee Nightmare
Evocation Illager - The Banshee
Ghast - The Nightmare

Observed Results:
All remodeled mobs have corrupt textures

Expected Results:
Everyone should look like the images provided

Screenshots/Videos attached:

Yes

Regression Builds:
1.11.10.0

Notes:

Here is the Link to the client build test report https://docs.google.com/forms/d/e/1FAIpQLSdt83g2eRbcAgpSvq7JS5P2yoZDT8K8xCLP9qXxWwstEyej-w/viewform?edit2=2_ABaOnue1T20v1ad6PTQpPxEW49iV5InTfWhdMN7Yar5Bs9P1x3dS6uPjCAFetg