Onlyoffice sync problem

I have a problem when I edits documents online with other users, I mention that I have the latest version of owncloud and onlyoffice document server on 2 different servers

Expected behaviour
I expect that what others edit online in browser in onlyoffice to sync with my folder in my computer

Actual behaviour
I cannot see what others edited in document from browser, i see a blank document in my folder, and if I download the file from browser it is empty
Steps to reproduce

1.create a file using onlyoffice
2.edit the file online in browser the document from your folder

Server configuration
Operating system: Ubuntu 16.04 x64
ownCloud version:

Thank you,