I'm not sure if it's a bug or maybe some kind of feature, but I couldn't figure out the reason why some npcs sometimes would appear semi-transparent, as if they were ghosts. Like the orc and soldiers in this screenshot.

I noticed that behavior many times during my last play and I figure it has something to do with the line of sight, but I don't recall this happening in the alpha and I really don't see the point in displaying out of sight things like that.

Does anybody also experience it or could confirm it is supposed to look like this for any reason?