In the Directory plugin the reviews (comments) do not store the star rating for that specific review

When I create a Review (comment) for a listing I set the number of stars and then enter my review text and submit. But when I log out and log in as a different user the previous reviews have no star ratings.

If I then rate the listing then all previous reviews show the last rating.

I assumed that because there were star ratings next to each review that it would store the rating given for that review.

Can you tell me if this is a bug or is the Directory plugin not meant to store the ratings for each individual review.