This has been going on for me for a while too. When I attempt an SRV salvage mission such as retrieve n"2 Bootleg Liquor", when I get to the irregular markers site, there are targets on my HUD in the ship that correspond, but they seem to be in a mis-calculated as though the items were underground (sort of, because as I move the ship (or SRV) around to find them, the targets don't move as you would expect in 3D space. The flying guards spawn and I can shoot them down. I can make my way to and through the 'restricted area' - but no cargo to be found. I've re-tried these missions with 2 or 3 of the recent Odyssey updates thinking it would have been noticed and fixed. But as of patch 5 - still no luck....