Hello, it happened with me, now in 2022 playing on Steam. First, I pushed the lever, to go out of the tomb and return to the city. Once in the Freetown I rested only 6h at the inn, because i still had 2 extra Recovery points, so I go back to the crypt, fulled with Extra Recovery. Once there at crypt, I passed throug the trap ( it closed the gates again), killed all monsters talked to the ghost scriber, finhished the quest "Mightier than sword", then in order to get out of the crypt, I arrived at the lever, by my unhappiness, the lever is already pushed to the right, impossible to open the gates once again. I do not have any scrool of teleport, I am definitvely trapped inside the crypt, unless I restart all path since the other saved game .