I have found a problem when you go to the portal in the Inferno Archway. You get to a parallel world. There is a mission with an invisible potion to enter the door. After that, you fight a chair and a book. I try to fight for some time, then I press 'give up,' but the book keeps chanting 'magic' in a loop nonstop, even when I skip a lot of time. And I have no way to get out of it.