ISSUE:
The Soviet and FIA Medical Crate's (the item) can rarely cause an inventory issue where a bandage is added to the inventory, but is invisible and nigh inaccessible by normal means but takes up space in whatever piece of clothing it was placed in, with that clothing most often being the chest rig.
REPRODUCTION:
Reproduction is difficult to do manually, but if you use the Medical Kit with an actual Medic chest rig on the USSR enough, you'll encounter the problem at least once.
TROUBLESHOOTING:
If you want to get rid of the phantom bandage you may have to get rid of the "infected" piece of clothing entirely and replace it.
EXTRA INFO:
It should be noted that picked up medical items seem to be placed in the chest rig by default, if there is one, and I personally prefer to hold the Medical Crate in the Medic Bag, and carry 3 bandages, and 6 tourniquets in my Medic chest rig on USSR and that green universal chest rig on FIA. I note this because maybe a mass management problem is happening with the Soviet equipment that doesn't happen with the US rigs' enormous inventory capacity.