MyName: I'm playing with the patch, so far everything is great (thank you Larian!), but, in the Imp Castle, after killing the boss, there's no Dragon's Heart in the chest, just a random item. I've never gotten this far before, so I'm not sure what's supposed to be happening here, but I've scoured this dungeon and it looks from the cut scene like the dragon's heart is supposed to be right there in that chest.
I did accept the Warrior's Guild quest first. Has anyone else had this problem, did I do something wrong, is it a bug, or am I just overlooking something (maybe it's not supposed to be in the chest, etc....?)

MyName: It won't be in a chest, Rak'Sheen will drop the Dragonheart gem when he dies. Search the booty laying on the floor where you killed him, can't remember if it needs to be identified or not . .. Press the ALT key to see item descriptions in the immediate area.
Edit: should also find the teleporter scroll of the imps on a pile of rotten food somewhere as well.

MyName: Thanks -- I'm an idiot, I completely missed the lever on the wall after fighting the lightning dragon guy, so I hadn't actually found Rak Sheen...