Priceset for memberships on contribution-page not working

To reproduce set up a contribution-page for membership-signup using a priceset. Browse to the contribution-page and fill out the form.
On confirming the contribution you will end up with this error-message:
"""Please select at least one membership option."""

Ok. The option-value for the pricefield which was chosen has to be associated with a membership-type.

On a localized (german) civicrm I navigate to the list of pricefields of a priceset and follow the links "edit priceoption" and "edit option". There I can choose a membership-type for the price-option.
Unfortunatly this does not work with an english version of civicrm. The link to edit the price-option just doesn't appear.

But even worse: If I actually got my membership-signup-page working with a priceset and I perform a registration with that page, civicrm won't create any membership or contribution. It will create a new contact, but never enter the logic of the payment-processor at all.
And no Error will be thrown.