1) Start weapondupe_repro.Stratis with 2 players
2) Player 2 (Client) opens Hatchback inventory (car is owned by the server)
3) Player 2 (Client) puts their weapon into Hatchback inventory
4) Player 2 (Client) right clicks on the weapon in vehicle inventory AND AT THE SAME TIME starts dragging it to "Ground" tab
5) When you finish dragging you should have weapon in your inventory and on ground at the same time.