On a review with multiple reviewers, I was the first to approve of all the changes, so I clicked "Complete", which displayed a message "You have marked REV-36 as complete". This concerned me at first, because it sounded like I had marked the whole review as complete and that the other reviewers might not get to review it. But then I saw that it had only marked me individually as "Reviewer Completed". A better message might be something like "You have marked yourself as having completed REV-36."

Also, another confusing thing about the popup that appears after clicking "Complete" is that it contains the Inbox section displaying my other open reviews, which feels out of place to me because seeing a popup listing reviews Y and Z after I just clicked "Complete Review X" is unrelated. My first thought when I saw a different user pictured on the popup than the user whose review I had just completed was "oh no, I must have switched browser tabs and accidentally clicked Completed on the wrong review!"