As you all know, once a user reach 2000 reputation he is able to edit questions and answers. Users with less than 2000 reputation can also edit a post however their edit needs to be reviewed and accepted.
Every now and then I see such edits and in most cases I accept these edits. What's odd is that we need more than one user to review and accept an edit. Not too long ago I got this message after accepting an edit:
"You have already reviewed this item. It needs more reviews from other users to be completed."
I find this odd because as a user with more than 2000 reputation I could edit the question myself without the need of peer-review, so I don't see why I can't accept an edit only by myself. What's more annoying is that once I approve an edit I can't edit the question even further (I have to wait for the previous edit to be accepted/rejected first).
Is there any reason for this?