Clicking into the armor slots or the first inventory slot cancels crafting recipe preview
This is basically MC-124963, but for the 2x2 crafting grid.
To reproduce:
- /recipe give @p *
- /clear
- Open your inventory
- (Open the recipe book)
- Click a recipe
- Click the top-left inventory slot
- Observe the recipe preview disappear
This is because the number of inventory slots with which interaction cancels the recipe preview uses the number of slots appropriate for a crafting bench, 10.