IOS7.0 Mail shows Flagged message count when there aren't any
I go to the Edit option in IOS7.0 mail and elect to display the "Flagged" messages special/smart folder.
Then when I select Done and return to the mailboxes view it shows that I have 10 Flagged messages, by the number "10" being displayed on the right hand side. BUT when i click on that it is empty but still displays "10 Flagged" at the bottom on the status bar. Very odd! Especially as I don't believe that I have any flagged.
Also if i search for flagged messages none are returned.
If i deliberately flag a message then count is increased to 11 and when I unflag it it goes back to 10. Try as i might i can't get it to display zero or work out where the Flagged messages it things I have are.
Does anyone have any ideas about what is going on here?
I think I have found my first IOS7.0 bug!
iPhone 4, iOS 7, 32G