By the advice of experienced people I decided to recreate this (updated) bug report here. Issue: some bounty bosses, in particular, Katrenn, Torkar, and Dhwrgas do not drop their respective uniques (Katrenn grimoire, The Maker's Own Power belt, and Precognition amulet). Version 2.0.1.0044, save file after battle with Dhwrgas https://www.dropbox....).savegame?dl=0. Lady Epero and Lord Admiral Imp are ok (as for me), also should be checked if Eamund the Fox has any chance to drop his grimoire.
Edited by Xsanf, 14 August 2018 - 02:55 PM.