Crystal white ''fixed''

[Mareshkel]

Now the quest is doable, but a the point where you need to see Rook the door can't be opened. A trick that can help is to use the bash skill while smashing the key to open on the roof door, its tricky but now both the collectible and the quest can be done, but please Techland fix it completely.

[Tiradentes]

Or go back outside all the way to the streets and go back in. That fixed it for me.