The bug

All variations of cut copper that can be waxed (normal, lightly weathered, semi-weathered), have two separately listed recipes in the recipe book. One for adding honeycomb to the unwaxed but cut version, and another for crafting 4 waxed but uncut versions together. Normally when an item has multiple recipes, these are grouped into one button in the recipe book.

How to reproduce:

1. Run command: /recipe give @p *
2. Open crafting table, recipe book, "show all" button, compass/all tab
3. Type in the search bar "waxed cut copper"
   you'll see two different recipe buttons for the same item (also applies to slabs and stairs, screenshot excludes them visually)