Description: Having emeralds in inventory, and in the trading menu with a leatherworker villager, without enough emeralds to purchase an item, the bar depicting the item lights up as if you did have enough emeralds to buy the item.

Steps to recreate: Go up to a leatherworker, or make a leatherworker by placing a cauldron next to a nearby novice or unemployed villager. Have 2 emeralds in your inventory. Open the trading menu. The second option in the novice section (the one with 3 emeralds for a dyed piece of armor), will appear red. Pick up the emeralds in your inventory and move them around. You will see the red bar flash gray quickly. Place the emeralds either in a new spot in your inventory or the same spot.

Expected result: With the menu opened, the item you do not have enough emeralds to buy is highlighted in a dark red, as usual.

Actual result: The bar mentioned above is highlighted in the light gray of meaning you have enough emeralds to buy it.

Notes: When you click on the emeralds in your inventory to move them around, while you drag them, the bar goes red. When you click on the bugged bar, it goes red and tells you that you cannot buy the selected item.

Please let me know if you need more examples and/or more details.