This is NOT true item duplication - it is visual only.
Bug that creates a duplicate item which disappears after sorting/changing stash tab.
To reproduce:
- Visit gambler and buy anything.
- While the rarity is rolling, sell the item.
- After you get gambled item, the sold one reappears in your inventory.
- You can buyback the original item leaving you with 2 “copies” of the item, one of which will disappear when sorting
Here’s a video of it happening (might still be processing): https://drive.google.com/file/d/1-i_5Ptdh7bu06c1_nnKBWWZ8UZztqmDf/view?usp=sharing