Occasionally I've had bags especially assault bags & hunting pants bug out and stop appearing in my inventory. This is usually followed by a series of game freezes that can only be fixed by dashboarding the game and reloading, but said clothing/bag will remain im unavailable in the inventory. If I take said item to hands I can store object in it that way but if I place back on body it dissapears aswell as any items therein. Only way to stop crashes is to drop bugged item. Hope this helps