With this keybind set to Q, if you press Q to deselect an item in your cursor, while hovering over an entity (that you don't have in your inventory), game will attempt to craft said item.
Picker should only check to craft an item if cursor is empty, as when this happens to an entity that you Do have in your inventory, the game will simply ignore it.
This has bugged me for the longest time, and I swear this functionality used to work properly, although it was a separate mod back then.