Board Thread:Questions and Answers/@comment-69.223.184.184-20160714020613/@comment-27384850-20160714021535

Because the volumes that aren't locked require cleanup. You should see a notice at the top of pages that are unlocked stating what needs to be done to them, whereas locked pages don't have any such notice. Most of us don't have the time to fix it on a whim, so we leave it open for anyone to work on then, once it has been edited, we go and edit the changes that have been made.