Emeralds/Items returning to inventory after trade.

So trading with villagers takes your emeralds, is supposed to at least.

When finishing a trade with villagers, you can quickly open inventory then open back up the trading menu to find that you not only have the item(s) you traded for, but now you also have the emeralds you just spent. This occurs with any trades, not only spending emeralds, so it can result in any free item if it can be traded.

Please see the following videos:

https://youtu.be/5VE8h2H96nU

https://youtu.be/fI4v9tUOrCQ