Forge version: 14.23.4.2738
Twilight Forest version: 3.7.424
Link to crash log: -

Steps to reproduce:

1. Wear armor (I wore dark steel armor)
2. Center yourself and rub up against the final boss text in the castle
3. Face straight down and hold right click to equip the final boss with your armor
   (Note: Repeat step 3 to get the armor back)
   (Double Note: it may take a couple of tries of right clicking in the right spot)

What I expected to happen: I was trying to capture it with a soul vial, otherwise I expected nothing

What happened instead: It persisted from being captured and instead stole my armor!