Infinite Duplication Issue With Renamed Materials

Renaming one crafting material using an anvil and then having an unnamed version of that material with enough to craft an item will allow you to duplicate it. This should be possible with other items such as iron, gold and emeralds although I haven't tested it. This isn't exclusive to diamond blocks as I also tried it with other things crafted with diamonds such as armour.

When used with diamond blocks, it allows you to infinitely repeat this as you can turn the duplicated diamond blocks into diamonds and repeat as wanted.

This testing took place in a multiplayer server with 2 other players online.

Steps to reproduce, as shown in the gif attached:

1. Rename one diamond or any other resource to whatever you want with an anvil
2. Gather the resources needed to make a diamond block (9 diamonds)
3. Put the renamed diamonds in front of the original diamonds in your Hotbar
4. Right-click the item you want in the recipe book (in the attached video, I right-clicked the diamond block

It should be noted that you shift + right-click the item and then you will get a stack instead of just one.