i run into this quite frequently; even with some guns, if they're flat on the ground (rather than dropped from an enemy), they'll sometimes be rendered just a few pixels below the actual surface & they cannot be picked up for some reason. Although most of the gun is visible, you can't get it. The same with scissors, albums, cards. It happens literally like all the time; I understand if they have "hidden items" you need to maneuver to obtain, but there is something drastically wrong here when items are only merely below the surface but most above it, and you can't get it because "they're too flat". or something.