When 'syncronizing' a folder in the nextCloud app, actually changes from the remote server become propagated on the mobile device. However changes on the mobile device aren't uploaded back to the remote server.

How the nextCloud app should behave:

• files added to a synchronized folder should be scanned/recognized
• changes to files (create, update, delete) of a synchronized folder should be propagated back to the server
• conflicting changes should open a dialog (overwrite on device/server, rename)