Playing on PS3..
When doing the ''Fly with me'' quest you have to go to a basemant to clear out nightkins and talk to their leader Davison.
Well i died when i first tried to clear them and reloaded an autosave.
This triggered a glitch , Now the nightkin do never uncloak (they are supposed to uncloak when you shoot them) , Davison is also invisible when talking to him
i havent encountered other nightkin yet so i dont know
i searched around and many other people seem to have the same problem
Dont get me wrong i absolutely love the game but just wanted to get it out there so they can include it in the next patch

i guess i experienced this as well, the nighskins were invisible after i killed them as well, i couldnt target them in vats even after i began to attack them. even their corpses stayed cloaked after i had taken their stealth boys. didnt know it was a glitch but come to think of it it is..