Guys, I tried it once before, when it was 4.0, it seemed like the putting things in the inv was hidden by the immediate action of putting things in the inv when the packet sent to the server still wasn't sent yet. Meaning when I put the items in my inv, and immediately quit, some packet are still being sent and while the game already say u have the item in the inv, I know this becuz my internet sux, and it lagged, and immediately after I see connected, I quit using control w, and I still see some things in inv, some things in bag. I'm not sure if duping still work, but if we can see the packet sending thing, probably duping still works.