Sukasem,
Interestingly, I could actually use such a 'Bug' in the modifiers, but I cannot reproduce it.
This is useful where - for example - you want to use modifiers as instructions to the kitchen.
Per your example, you would be able to have modifiers 'Chicken, 'Beef', and then you would create modifers called 'No','Extra','A Little', etc.
In this way you can keep one set of modifiers for ingredients, and another for how you want those ingredients to be applied. ('No''Beef'. 'Extra''Chicken'