Removing amulet breaks game

I have an amulet that when I remove it causes my frames to drop and I lose 2 skill gems I have slotted and my demon form disappears from the list. I'm a level 72 infernalist witch.

This is a game breaking bug that makes my character unplayable.

What are the stats on the amulet? It sounds as if you are losing attributes (STR, DEX, or INT) that you need for your skills when you remove it.

This is not a bug.

I mean, it causes my whole game to slow to a crawl and crash out so doesn't seem like an ideal mechanic, but I will have a tinker,