The Whellcumian achievement is not completed and when I got Beton's green underwear sniffet it unlocked his gray underwear either. I've never encountered it before, it took out the fun of finding it myself. Playing on an Android.
I noticed this as well. When it happened I quit the game without saving and tried to find the other sniffet, and found it in the barracks locker room in the morning, and when I found it both underwears got unlocked also.
