Landing on slabs as Llama Spit causes your disguise to turn you invisible

[baailey]

Server version: git-Paper-196 (MC: 1.20.1)
Plugin version: 10.0.40-SNAPSHOT (#1273)

If you disguise as the Llama Spit and drop from a distance onto slabs, your disguise will vanish and it will allow you to walk around invisible. I have noticed after experiencing this, that just walking on the slabs can also turn you invisible after dropping just once. This is the second invisibility issue I have noticed, the first being #674.

I hope both of these issues can be fixed!