Hmmm did it Still Happen?
dont change it it doesnt affect all enemies (boses are not all affected) and it take doing it manually each time so I think it can be something for those who search for it
Its a Error with the Overkill (getting more enemies at once, Prestige 7) its fixed in my Beta Version but currently Not published.
It seems like the kill count on Dungeon screen doesn't update unless you toggle Autofight, which allows for extra kills on the bosses.