Multiple Choice field showing strange values

Hello Ninox Community,

I have a ingredient inventory table with a (multiple choice) field displaying allergens.

I also have a recipe table where the ingredients and amounts are added.

Now I have a formula displaying all allergens for a specific recipe.

Everything works, but this field displays wrong data. Is this a bug or am I doing something wrong?

I added some screenshots. In this example the product 'ui wit blokjes' has no allergens in the inventory table, but sums allergen 'vis' in the recipe.