Minecraft 19w11a, Minecraft 19w11b, Minecraft 19w12b, Minecraft 19w13b, Minecraft 19w14a, Minecraft 19w14b
If on a dedicated server, trades with villagers will never lock. If you trade, after a random number of trades the trade will be locked visually, but you will still be able to use it.
How to reproduce
- Join a dedicated server.
- Look for a villager and trade until it locks.
- Try to trade again (click on the empty space).
- The trade will work anyway. If it doesn't add more emeralds and try again.
- If you exit the villager's menu and enter again the trade will not be locked.
Note: This will not work in singleplayer.