If I approve an edit in the Review section of this site, the post is updated and so my approval worked!

However, if I'm looking at a post and notice there is an edit waiting 
![enter image description here][1]  and click on edit and then approve it, I get the message 

> This suggestion still needs 1 approve vote from other reviewers. Close
> this popup (or hit Esc) to continue.

Is this a bug or feature?

  [1]: https://i.sstatic.net/5r2hP.png