The procedure below describes how to produce bugs with throwable items (hand grenade, smoke shell, chemlight) by using commands like "clearXXXCargo" and "addXXXCargo" to the uniform/vest/backpack (commands XXXContainer).
To summarize the bug :
- clearing uniform/vest/backpack leaves "invisible" (in inventory) but usable items
- adding throwable items to uniform/vest/backpack with addXXXCargo commands adds unusable items