Only one product per cart can be bypassed

Hi there!

First, thanks for the great plugin.

I have a question.

If I choose to limit orders of a product to only 1 item per order (from Inventory settings of a product page) then this limitation could be bypassed.

For example, I add a product to cart. Then I add to cart another product which is bought together with the first one. Now I have two items of the same product in my cart which I’d like not to have.

Is there a specific setting to fix that?

Thanks and regards,

Todor