Dark Dreams of Furiae - a new module for NWN:EE! Buy now
Aec'Letec can disappear when leaving and reentering the area
The demon Aec'Letec can disappear if the player leaves the area, saves the game, reloads it, and then reenters the cult's basement.
The expected behavior is that the demon should still be there but it is not. All of his followers are still there and hostile; only the demon is missing. A possible bug related to the way he spawns/respawns off of the cult followers.