Divine Intervention

So I managed to get lucky i guess I was fighting at the second stage of the master of conjuration (can't remember the name) and my level 11 cleric of life managed to hit 11% chance for divine intervention and a Divine Avatar got summoned, I walzed through the fight no big deal. However on the tooltip for the divine intervention it reads that the divine avatar stays for one minute. After beating the master of conjuration and getting the gem, I went for a long rest, however the avatar is still there and won't dissappear. I believe that this is not how the cleric power is supposed to work.