The bug

When you get a recipe either by crafting or obtaining an item, and then remove the recipe using /recipe take, the recipe will no longer be learned if you obtain the item without crafting, To re-obtain the recipe, you have to craft it.

How to reproduce

1. Create a new world (obtaining recipe by receiving the item only works once)
2. /give @p planks
3. /give @p log
   (used to prevent more recipes from obtaining later)
4. /clear @p planks
5. /clear @p log
6. /recipe take @p *
7. /give @p planks
   → You do not get a recipe notification
8. /give @p log
9. Craft a plank
   → The recipe is now given