feeback change ?

Seems the feedback page has changed......

Just trying to leave feedback for a seller  and it's asking me to ''rate the product out of 5 stars''. The item is a tube of construction adhesive. How am I supposed to rate it when it wont be used for possibly some time ?

Feedback is supposed to be for the service provided.... delivery, comms etc. Rating a product is  a separate issue but it seems now we're unable to leave feedback for customer service ??