Foundation 6 Forms with two submit buttons?

Hi,

I want to build a form with a „Subscribe“ and „Unsubscribe“ button but it doesn’t work.

It should be like this:
Textfield (Email)
Checkbox (Privacy)
Subscribe Unsubscribe

As soon as I add a second button (unsubscribe) with a second POST URL Action both buttons addicted to the last added POST URL Action (unsubscribe). It makes no difference if I click on Subscribe or Unsubscribe both will link to the last added POST URL.

Is it by design or do I miss something here?

All the best,
Oliver