Hello,
I've encountered a bug today, when you pickpocket mobs around lvl 40, they carry worn junkboxes http://db.vanillagaming.org/?item=16883 and these boxes, when picked, should contain tons of different trash items of grey quality. Items that don't drop are (These are the ones I think are missing, but maybe I forgot some) :
-Rogue's Diary http://db.vanillagaming.org/?item=24282
-Shabby Knot http://db.vanillagaming.org/?item=24232
-Coarse Snuff http://db.vanillagaming.org/?item=24231
-Carved Ivory Bone http://db.vanillagaming.org/?item=24281
Green and Blue quality items drop fine with a drop rate that seems about right (items like Citrine, Jade, Superior Healing Potion and rare daggers like Vendetta or Sliverblade).
Thanks for looking into it.