My dearest Lord Rutsah, i've finally encountered the second floor and wanted to visit the magi academy first of all. Think that was a mistake. Like don032 described, one could run the sewer temple quest by talking to an npc outside. But the worse thing was inside. When you enter the room with the elder mages, the conversation with Azar about defeating Ngombe starts. Wasnt problematic at that point, but when I actually defeated him und got teleported to the room, no conversation triggers. Now Azar has joined my party. When I met her in the laboratory there are two of her ^^
I guess thats not intended.
Game feels great untill now :)By the way, I defeated the guardian of the dragon tomb and scouted the sewers before I killed Illfang, just because I havent seen that door in his tower facing north xD