We're excited to announce that we've fully migrated the Xbox Forums to their new home, here on the Microsoft Community forums!
As of today, going to forums.xbox.com will redirect you here to the Xbox area of the Community forums. We've moved all of your existing threads over so you can continue and start conversations with the new forums experience.
We sincerely appreciate the feedback you have provided over this transition and can't wait for you to check out the new Xbox Forums!
I'd like to know as well, because I've also noticed this. I've done some testing on my own and found that there seems to be no rhyme or reason to it. I've had times where I helped multiple hosts kill the boss and not turned human. I've had times where
it's happened first time. I've had times where the host has died or even I died as a phantom and was turned human in my world.