There is a bug that when you are looking at the vicinity and there is a single item, the details of the item do not appear. If there are two items I have to move to the second item before the first items details appear. Kind of annoying but I dealt with it by switching the item with the one in my hand and then picking up my item afterwards. This time my pistol just disappeared after I dropped it, that made me super mad since I am running just a mosin and pistol in the nw airfield.