Glitch with the Headhunter belt

From my playing it appears that the headhunter belt can make you invincible until you go back to your hideout. I think the bug happens when you take the volatile crag modifier from a rare monster the balls continue to float around your character even when the buff is gone. This for some reason just makes the enemies run into you without attacking. When you enter a new area or go back to your hideout these balls disappear and you can take damage again. I don't know if this has to do with cosmetics but I am using the King of the Faridun set. I am not 100% how this works but it doesn't happen all the time.