I just noticed it last night playing the Hox messing around with AAs. When you feat Feeding the Pyre AA that stack 6 burning skulls, then replace it with something else the 6 stacks stay on your buffs and cant get removed. I tried it out several times and the 6 stack stays there all night while still applying damage when anything attacks you. They are suppose to be removed normally when attacked but the stack size stays at 6 until you re cast the spell it goes back to 3 and stacks can be removed. Anyone else see this bug? It seems like you get a free AA buff without even having it slotted?!?
To clarify, I have 5/5 feated Feeding the Pyre, and I replaced it with another silver perk and still get the benefits of the Feeding the pyre perk except that the buffs stacks don't get removed at all.