Not working with “Any [attribute]” variations

Hi guys,

I found that I can’t add to cart a variable product which has an “Any [attribute]” set.

Let’s say that we have a shirt with colors red and blue. If I create a variation for each color (one for red and one fore blue) it’s ok, but if I create a single variation with “Any color” I get the error “Color is a required field”.

Can this error be solved?

Thanks a lot,
Have a nice day!