- Reproduction Steps: We think it has to do with having more than 100ping in multiplayer and a chest (though we did it with a Stone Chest, we didn't check to see if it worked with other chests). Simply click on the item fast enough and it will duplicate the clicked item to the quantity of any previous item. We were able to dupe ores, bars, and gems (it copied the quantity of our stone). We were also able to sell the duped items for money.
- Repro Rate: It works every time with any stone chest and any item.
- Game Platform: Steam
- Input Mode: Keyboard & Mouse
The save file and a video showing the dupe is currently attached to this post.