Bug inside “Family’s Crypt” in the Mithria cemetary

I’m currently doing the quest for the Uncle with nightmares, putting his wife’s ghost to rest. In the Family’s Crypt which I went into to check out, the (what I’m assuming is supposed to be hidden) hallway to the north is fully visible with skeletons and wraith monster enemy. However, there is an invisible wall preventing me from engaging with them. Maybe it’s an issue with the textures?
I’m playing The Quest v16.0 and for extra information, I’ve done this quest before in The Quest Classic but did NOT tun into this bug.
I’m playing The Quest v16.0 and for extra information, I’ve done this quest before in The Quest Classic but did NOT tun into this bug.