The bug is back. I'm in the middle of collecting all the underverse subunits, and suddenly combat loot sites have started only dropping a single ai core again.
It seems to be a bit more sporadic than before, but it still happens maybe about 2/3 of the time when I attempt to pick up loot.
It started just after I finished collecting my 76th and 77th units. It doesn't seem to matter whether I have them installed or not. I have only been grinding for a while, so I have been doing almost nothing else but combat, and buying/selling the loot I get. No mods or cheats, either.
I have backed up a save at the point where I first noticed it happening, as well as the start of the day save, but I'm not sure how to get it to you. I don't use Discord, Patreon or the like. I don't think dropping a cloud link here would be appropriate either.