I found a bug. If you complete the quests in the first house in this order: (I don't think the order matters at the beginning, but it's important at the end): Lion's Crown, then, if you take Silent Stalker, learn the skill, return to the tavern, the quest will be completed, but you won't be able to enter again, you'll just be stuck. But if you complete the quests in this order: Lion's Crown, Crown of Sar-Ilam, Silent Stalker, then everything works.

Added 1 minute ago
and also, the panel showed the first error: "Object brevno_1 doesn't exist." I don't know what that means...