When setting villager trades (via commands), tools have a data tag as Damage:0 which is not applied to normal tools. So if you try to trade an unbroken tool for something, you cannot because it doesn't have that data tag.

What I expected to happen was...: the unbroken tool should be able to trade since they should be identical items.

What actually happened was...: the unbroken tool was not able to be traded because it had an extra Damage:0 tag in the code (even though there was none) that made normal tools not fit the requirements

Steps to Reproduce:
1. Enter the command, "/summon villager ~ ~ ~ {Offers:{Recipes:[{maxUses:999999,buy:

,sell:{id:diamond,Count:1}}]}}

2. Pres F3 + H to show hidden tooltips
3. Open the trading menu of that villager
4. Try to trade a normal diamond sword for a diamond

5. Notice that the diamond sword in the trading menu has an extra nbt tag.

6. This will not allow for the item to be traded.