ToME: the Tales of Maj'Eyal

I've just unlocked the Annihilator class, and am testing it out on a new character. The AED talent (Steamtech/Gadgets talent 4) tooltip says that the AED will store charge for 8 turns, strongly suggesting the effect can trigger at any time within the next 8 turns. Instead, it automatically deactivates at the end of the next turn, making the talent all but useless.

Can't reproduce it.
AED will only deactivate if you are taking a hit that will kill you.

for me it works fine as it should, maybe its some interaction with something specific?