A very noisy bug is when:
You are at the end on ACT 3 and when you have finished the scripted sequence on the buried island to start the act 4 a popup show to tell you that your party maybe is too highlevel for this act and maybe you want to raise to normal or hard mode. BUT even if you completed the scripted sequence you are still on the buried island and you ahve to redo it. WHere is the bug? Your Fortress is frozen. NOt literally but cant access the panel trough the "talking throne" or the button anymore cause the game maybe is thinking you are anyway into act 4 in the blessed "Sun and Moon" halls. So no more Strnghold quest are activated, no more bandits no more taxes no more nothing from your stronghold only that you can visit it and talking to some stupid NPC :D
