Owncloud + S3 as primary storage :: cannot use file anymore after restoring it to a previous version

Expected behaviour

When a file is restored to a previous version by using the web interface, the restored file should be synchronized in the desktop client and the thumbnail should be updated

Actual behaviour

When a file is restored to a previous version by using the web interface:

  1. the desktop client is not downloading the restored version
  2. the gallery app is not updating the thumbprint
  3. if you force the file download in the desktop client (using VFS > right click on the file > free up space > try to reopen the file), the client will trigger the error:“the downloaded file does not match the checksum

Steps to reproduce

  1. Install OwnCloud X 10.7.0 with S3 as a primary storage (file versioning enabled on S3 bucket)
  2. Install desktop client on a Windows 10 machine
  3. Upload a file using desktop client (this can be a simple new txt file)
  4. Change the file in the desktop client (a new file version will be uploaded to the server) OR change the file (in this test case, a txt file) in owncloud web interface using the text editor app
  5. On the server´s web interface, restore the file to a previous version
  6. the server will update the file to a previous version and the desktop app will not update the file
  7. the gallery app will not update the icon
  8. the file will not be “downloadable” by the desktop client anymore. only by the web interface

Server configuration

Operating system: Ubuntu 20.04

Web server: Apache

Database: Mysql

PHP version: 7.4.3

ownCloud version: 10.7.0

Storage backend (external storage): S3 as primary (and only) storage + file versioning enabled in the S3 provider

Client configuration

Client version:

Operating system: Windows 10

OS language: English

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