Encountered duplication of chest items

Hey there. I was minding my own business with a hoarder vault mission. While searching for map pieces, I picked up a couple of treasure chests along the way. What was odd was when I picked up the first chest (which was sitting on the ground, not buried), a duplication of the chest's item, a goblet, showed up where the chest sat. The second chest however proved this wasn't just a misplaced item hiccup. I was digging up the second chest, and at the first scoop of my shovel, duplicates of the chest's contents appeared, clipping through the chest lid. I moved the chest and found two sapphires and a roaring goblet in it's place. I opened the lid, and what did I find inside with the gold? Yep, two sapphires and a roaring goblet. The good news is that when I dug up the chest with the vault key, the key wasn't duplicated. It seems this duplication glitch only effects non vault chests. I could've just kept this to myself, but I'm a better man than that; if this glitch appears in game, it might ruin the economy by over rewarding the player. What shall be done about this, my Captains?