I've noticed that while reviewing the post is not locked for the concrete reviewer and someone other reviewer can make an action such as approve or reject.
If such thing happens when you want to make your own action the message appears that says the post is already approved or already rejected giving a link to the post.
I can use the link to edit the post. But it seems worthless as I don't know how to rollback the previous revision. Is there any possibility to do so?
Why after using that link and redirecting to the post to make changes cannot return back to continue review?
Why such a post doesn't count for the reviewer task?