It's been broken since 8.0, now fixed.
Before, in iOS 8 to iOS 8.1, metadata was stripped if you edited in the iOS Photos.app, or used an extension, and looked like this:
Now it retains all data, making it easier to auto organize your photos via a cloud service or through your own automated workflow:
Before, in iOS 8 to iOS 8.1, metadata was stripped if you edited in the iOS Photos.app, or used an extension, and looked like this:

Now it retains all data, making it easier to auto organize your photos via a cloud service or through your own automated workflow:
