This is happening to me too, fairly regularly. Like in my previous mission, where it happened quite early on. I tried going back to the start to see if the items would be somewhere along the way, but no - they are waaay down below the map.

I'd like to think I spread my immense personal wealth among the loyal imperial citizens down beneath my inquisitorial feet, but a) it looks like an industrial world and b) it's full of rebel scum. At this rate, my fellow inquisitors will start accusing me of being a heretic, giving credits and relic weapons to the enemies of the Emperor.

you can pick any of this loot up by just walking over it i use the fireing range circles around char just have auotoloot on and get the loot in the orange circle you can collect it with no problem. (camera angle makes it look like you directly over said loot but you probably arn't just seems that way) I think more of a graphical bug rather than a physical one. All this loot is from just the 1-3 shot destroyable objects that now drop loot example barrels, some boxes and consoles on the walls anything blows up in 1-3 shots usually drops random loot. Sure you know that but just pointing it out. The enemy loot its self dosn't drop under visually.