Versions on Local External Storage are only visible for the User who modified the File

⚠️ This issue respects the following points: ⚠️

• This is a bug, not a question or a configuration/webserver/proxy issue.
• This issue is not already reported on Github OR Nextcloud Community Forum (I've searched it).
• Nextcloud Server is up to date. See Maintenance and Release Schedule for supported versions.
• I agree to follow Nextcloud's Code of Conduct.

Bug description

Context: editing a file on an external storage of type local

While the current version is visible to anyone with access to the respective folder, the visible versions are only the ones created by the current user, not those of other users. Consequently, each user's folder on the server disk contains a respective file_versions directory).

For a collaboration system, expected would be that everybody sees all versions, regardless by whom they were created.

Steps to reproduce

With versioning enabled:

2. Log in as user A.
3. Create a file in a folder located on an external storage of type local.
4. Edit the file to create a new version.
5. Log in as user B.
6. The version of user A is not visible.
7. Edit the file twice to create new versions.
8. As User A, the intermediate version is not visible, only the latest state.

Expected behavior

Every user should have access to all versions, regardless of who created them.

Nextcloud Server version

31

Operating system

Debian/Ubuntu

PHP engine version

PHP 8.3

Web server

Nginx

Database engine version

MySQL

Is this bug present after an update or on a fresh install?

None

Are you using the Nextcloud Server Encryption module?

Encryption is Disabled

What user-backends are you using?

• Default user-backend (database)
• LDAP/ Active Directory
• SSO - SAML
• Other

Configuration report

{
    "system": {
        "memcache.local": "\\OC\\Memcache\\APCu",
        "apps_paths": [
            {
                "path": "\/var\/www\/html\/apps",
                "url": "\/apps",
                "writable": false
            },
            {
                "path": "\/var\/www\/html\/custom_apps",
                "url": "\/custom_apps",
                "writable": true
            }
        ],
        "instanceid": "***REMOVED SENSITIVE VALUE***",
        "passwordsalt": "***REMOVED SENSITIVE VALUE***",
        "secret": "***REMOVED SENSITIVE VALUE***",
        "trusted_domains": [
            "ara.michael-thomas.net"
        ],
        "trusted_proxies": "***REMOVED SENSITIVE VALUE***",
        "overwriteprotocol": "https",
        "datadirectory": "***REMOVED SENSITIVE VALUE***",
        "overwrite.cli.url": "https:\/\/ara.michael-thomas.net",
        "dbtype": "mysql",
        "version": "31.0.7.1",
        "dbname": "***REMOVED SENSITIVE VALUE***",
        "dbhost": "***REMOVED SENSITIVE VALUE***",
        "dbport": "",
        "dbtableprefix": "oc_",
        "dbuser": "***REMOVED SENSITIVE VALUE***",
        "dbpassword": "***REMOVED SENSITIVE VALUE***",
        "default_phone_region": "DE",
        "installed": true,
        "ldapIgnoreNamingRules": false,
        "ldapProviderFactory": "\\OCA\\User_LDAP\\LDAPProviderFactory",
        "loglevel": 1,
        "mail_smtpmode": "smtp",
        "mail_smtpauthtype": "PLAIN",
        "mail_from_address": "***REMOVED SENSITIVE VALUE***",
        "mail_domain": "***REMOVED SENSITIVE VALUE***",
        "mail_smtphost": "***REMOVED SENSITIVE VALUE***",
        "mail_smtpport": "25",
        "maintenance": false,
        "maintenance_window_start": 1,
        "trashbin_retention_obligation": "auto,30",
        "theme": "",
        "mysql.utf8mb4": true,
        "app_install_overwrite": [
            "bruteforcesettings"
        ]
    }
}

List of activated Apps

Enabled:
  - activity: 4.0.0
  - app_api: 5.0.2
  - audioplayer: 3.4.1
  - bookmarks: 15.1.1
  - bruteforcesettings: 4.0.0
  - cloud_federation_api: 1.14.0
  - dav: 1.33.0
  - duplicatefinder: 1.7.3
  - federatedfilesharing: 1.21.0
  - federation: 1.21.0
  - files: 2.3.1
  - files_downloadlimit: 4.0.0
  - files_external: 1.23.0
  - files_pdfviewer: 4.0.0
  - files_sharing: 1.23.1
  - files_trashbin: 1.21.0
  - files_versions: 1.24.0
  - firstrunwizard: 4.0.0
  - groupfolders: 19.1.2
  - logreader: 4.0.0
  - lookup_server_connector: 1.19.0
  - oauth2: 1.19.1
  - privacy: 3.0.0
  - profile: 1.0.0
  - provisioning_api: 1.21.0
  - recommendations: 4.0.0
  - related_resources: 2.0.0
  - serverinfo: 3.0.0
  - settings: 1.14.0
  - sharebymail: 1.21.0
  - systemtags: 1.21.1
  - text: 5.0.0
  - theming: 2.6.1
  - twofactor_backupcodes: 1.20.0
  - updatenotification: 1.21.0
  - user_ldap: 1.22.0
  - viewer: 4.0.0
  - webhook_listeners: 1.2.0
  - workflowengine: 2.13.0
Disabled:
  - admin_audit: 1.21.0
  - circles: 31.0.0 (installed 25.0.0)
  - comments: 1.21.0 (installed 1.2.0)
  - contactsinteraction: 1.12.0 (installed 1.10.0)
  - dashboard: 7.11.0 (installed 7.1.0)
  - encryption: 2.19.0
  - files_reminders: 1.4.0 (installed 1.2.0)
  - nextcloud_announcements: 3.0.0 (installed 1.18.0)
  - notifications: 4.0.0 (installed 2.0.0)
  - password_policy: 3.0.0 (installed 1.2.2)
  - photos: 4.0.0 (installed 2.5.0)
  - support: 3.0.0 (installed 1.4.0)
  - survey_client: 3.0.0 (installed 1.3.0)
  - suspicious_login: 9.0.1
  - twofactor_nextcloud_notification: 5.0.0
  - twofactor_totp: 13.0.0-dev.0
  - user_status: 1.11.0 (installed 1.1.1)
  - weather_status: 1.11.0 (installed 1.1.0)

Nextcloud Signing status

No errors have been found.

Nextcloud Logs

Additional info

No response

Start in the files_versions and files_external apps, focusing on how versions for local external storage are associated with users. Reproduce the two-user scenario described in the issue, then trace version listing and creation; done means every user with folder access can see all versions, including intermediate versions created by others.