The Night-Stalkers Mask does not work in first person, in fact, it is darker than without it. There are some angles that interfere with a bow in third person and first person is the only way to target.
We’ve received a few reports about this in the past. Our team is aware of this issue but for the moment it’s not on their upcoming tasks.
Apologies for the frustration.
I also noted a distinct reduction in brightness without wearing the mask, when going from 3rd person to 1st person. So, I could assume this was not related to the mask, but the viewing mode. A clue for the future?