Automatic Document Sync?

I have NC server 16.0.1 and android client 3.6.2.
When I browse through the Android NC client and open a document, edit and save it the file doesn’t automatically sync back up to the NC server. It saves it locally in the local NC folder and if I manually hit sync it will sync with the server, but I was under the impression it would do it automatically.

Is this not a current feature of the android app?

If not does anyone have a recommendation for an andriod office app that supports webdav?

How long did you wait between saving and checking the server? As far asa I know it takes arounf 15 minutes until the client would sync back to the server.