Horse Armor Error

What I expected to happen was...:
To be able to ride my horse?

What actually happened was...:
I spawned into the world updating from 18w43c and my horse's skin had dissapeared, but the shadow was still there, I was worried for a minute because I'd been poking around converting Java to Bedrock but as it turned out the Golden Armor was making my horse completely disappear

Steps to Reproduce:
1. Apply Armor to Horse
2. No more horse