I just got a notification saying a post of mine was edited by a moderator. But when I went to look at the post, nothing was changed. It also didn't show "edited by a moderator" in grey text at the bottom right corner of the post. What happened?
Could it be that they accidentally clicked the edit button but didn't save the edit? That might trigger the notification but no change would have been saved.
Disclaimer: This is a total guess, I have no knowledge of how the moderator tools work.