Pistols and knives do not always go back to their respective holsters.

While carrying, for example:

1. a pistol assigned to your pistol belt holster (never tried chest holster) -> assign to quickslot 1
2. a weapon (e.g an SMG) in your inventory (pants, backpack etc., NOT one of the two shoulder slots) -> assign to quickslot 2

Do the following:

1. Press 1 -> pistol goes out of your holster, into your hands
2. Press 2 -> SMG goes in your hands, but pistol does NOT go back to holster, it takes the place of the SMG in the inventory !
3. Press frantically 2 again to try to get rid of the SMG before realizing that the pistol took its inventory space.

Please make it so that if I manually dragged and dropped weapons/equipment into holsters/weapons slots, they will ALWAYS come out of, and back into said holster/slot.
Such erratic behavior in a tense situation leaves you dangerously exposed as you need seconds to realize you are stuck with an unwanted piece of gear in your hands, and then need to go into inventory screen to resolve the problem.