Modified files in Word (iOS) not updated on server

[Anarethos]

Expected behaviour

Opening a file in Word (on iPad) from Nextcloud should upload the changes to Nextcloud.

Actual behaviour

When a file is updated in Word (iOS), the updates is not pushed to the server and are lost if the file was in the NextCloud client cache.

If the file is removed from the client cache, all editing in Word works (updated files is pushed on the server) until the client is launched. Then, all future updates are lost until the file is removed from the client cache.

Steps to reproduce

1. Create a Word document (using a computer) and send it to NextCloud
2. On the iPad, open the document from Word
3. Makes change to the document and quit
   a. The document should be updated and new modifications should be visible on the computer if the file is opened
4. Open the NextCloud client on the iPad
5. Return into Word on the iPad and makes new change
   a. The change should not be visible on the computer
   b. If the file is reopened in Word on iPad, the changes are lost
6. Open the NextCloud client and delete the file from the local cache
7. Open Word on iPad and makes change on the file
   a. Changed should be updated in NextCloud
8. Opening NextCloud client again should break the file until the cache is cleared again

iOS version

12.3.1

App version

NextCloud client 2.23.7.9

Server configuration

Operating system: Ubuntu

Web server: Apache

Database: PostgreSQL

PHP version:

Nextcloud version: (see Nextcloud admin page) 16.0.1

[stepnorm]

We are seeing the same issue as well on iOS with any of the Microsoft Office applications.

Everything appears to work but any changes made aren’t saved back to the server even those the app reports the file was modified.