S.T.A.L.K.E.R. 2 - Heart of Chornobyl #858: Mutants & Mercenaries
I make the jump from the roof of the garages, onto the roof of the first-floor building. From there I jump to the broken ladder and make my way to the roof. There I find the activated stash with a flash drive. I guess me being on the roof of the building attracted attention. A pack of Snorks and then Flesh attacked the facility. I got some more mutant parts. I grabbed my load of used weapons and mutant parts and went back north to STC Malachite.
As I arrived, some Loners were under attack by Bloodsuckers. I ran back to the Spark camp for the greater firepower. I looted the dead but again was not finding dropped weapons. I return to STC Malachite, drop off all the loot and then I'm back out again to the same area. Some Mercenaries attacked me near the road. I killed five of them, but all their weapons vanished.
Game Note: Still having dropped weapons fall through the ground with the 1.5 patch. It's as if GSC decided, that we didn't need the loot and they're doing us a favor. It's hard to believe this is accidental.