Mail Notification Dinging twice iOS 8

I have noticed that in iOS 8, my mail notification dings 2x. Once when the phone is locked and then again when I unlock the phone. In iOS 7, the notifications were setup the same as iOS 8, though the sound was not listed in the "overview" even though it was set to "ding". Now in iOS 8, the sound notification is listed and it dings 2x. In iOS 7, I would get a ding for a new mail message when the phone was locked and when I unlocked it, the banner would show at the top but would not ding a second time. This is not the same behavior in iOS 8. Has anyone else noticed this?