Weird issue when adding a new recipe.

I'm having issues with adding a custom recipe for mossy cobblestone. This is my code:

Code:

package me.Josvth.MossyRecipe;
 
import org.bukkit.Material;
import org.bukkit.inventory.ItemStack;
import org.bukkit.inventory.ShapedRecipe;
import org.bukkit.plugin.java.JavaPlugin;
 
public class MossyRecipe extends JavaPlugin{
       
    @Override
    public void onEnable(){
        ShapedRecipe mossyRecipe = new ShapedRecipe(new ItemStack(Material.MOSSY_COBBLESTONE,1)).shape("vvv","vcv","vvv").setIngredient('v', Material.VINE).setIngredient('c', Material.COBBLESTONE);
        getServer().addRecipe(mossyRecipe);
    }
}

It will add the recipe. However you can't use shift click to make the max amount of mossy cobblestone. When you try to, it will put 1 mossy cobblestone in your inventory and use 1 set of ingredients. If you then click on on of the ingredients in the crafting grid you will get the maximum amount and the ingredients will be used up accordingly.

Is this a bukkit issue or am I doing something completely wrong?

 

Seems like it's a bukkit bug and it's already reported on leaky. Closing this one.