Hey Kanetsu!
Hmm, no that black screen doesn't seem normal! With the locked off section, did you finish the tutorial with Claire? There is a bit of a zone which locks off the main part of the map, to ensure the tutorial finishes (if Claire dies it ends too!). That's good feedback if that is the issue, as means it's not clear enough that this section is locked off, so will take a look at that. Will also try to reproduce the black screen issue.
Thanks for the feedback, we really appreciate it!!
-elementalstudios