I've installed iOS 11 on my iPhone and iPad and one thing I've been disappointed with is third-party integration on the Files app. From everything I've read before installing iOS 11 I've got the impression there would be true integration, as in, the files from the provider would appear inside the interface of the Files app in the same way; however, what I see is that, when I select for example Dropbox in the Files app, a popover appears and shows the Dropbox app interface unchanged (in fact, on the iPad the popover does not even goes full screen). Now I'm wondering if this is that the way it's supposed to be or if the apps need to be updated.