Apple has added the option to "keep folders on top when sorting by name" in Finder since macOS Sierra, so its very annoying that I can't use this feature in Dropbox using the iOS app. I can understand that Dropbox wants to have a unified user experience, but technically speaking, Dropbox should have this option now to match this new user experience. The default can be listing all folders and files alphabatically, but users can select this option under options menu.