Why do I have 4 GB of inaccessible space on iCloud and iOS devices?

[iMore Question]

I have never seen this problem before. During upgrade to iOS 8 and iCloud Drive, my photos seem to have got stuck and hidden inside the iCloud. They take up roughly 4 gb of space on my iCloud account and iOS devices, but are nowhere to be found. After resetting my iPhone/iPad and connecting them to iCloud, 4 gb of space are taken up, even when I have absolutely NO photos in my Photos app or on icloud.com.

Have anyone seen this before, and maybe got a solution? I have tried resetting the devices, turning off iCloud Photo Library / My Photo Stream and even tried some kind of iPhone cleanup program on my MacBook.

Thanks!

 

[Just_Me_D]

That's weird. I've never seen anything like that before. Have you tried putting the device in recovery or DFU mode and having iTunes install a fresh copy of the latest iOS version on your device?