I just found four more bugs.
First, the four ways inn floats. It floats in midair. You spawn high in the air, and you fall to the ground, and take like 30 damage. The four ways inn looks nice and well polished, but the problem is that everything is floating in the air.
Second, I started a new game after beating the game, and when I got to the river source, and sailed to the island, I chose the option to fish 5 trouts instead of slottering the village, and when I came back with 5 trouts (gosh! It took forever!) they just asked me what my progress on the quest was, and then there were no options to do anything else. That means I can't get to the island if I chose the trout option, without teleporting with cheats. I'm not sure what might break if I skip the lake mission.
Third, regarding the four ways inn, if you talk to the hero's you left there, there isn't an option to have them rejoin you. They just say what they last said.
Fourth, all of the summoning spells except the call spell summon zombies. What's up with that?