[Bug]: NC28(beta4) users with spaces in username cant see any files in Files tab of web frontend

[ernolf]

⚠️ 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

After creating a user with a username containg spaces, the file view stays empty.
Updating from 27.*, users with usernames containing spaces don't see any files.

Steps to reproduce

1. Create new user with a username containing spaces
   2.Log in to new user
   3.go to Files tab

Expected behavior

Same as for usernames without spaces, as in the past

Installation method

Community Web installer on a VPS or web space

Nextcloud Server version

28

Operating system

Debian/Ubuntu

PHP engine version

PHP 8.2

Web server

Apache (supported)

Database engine version

MariaDB

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

Updated from a MINOR version (ex. 22.1 to 22.2)

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": {
        "instanceid": "***REMOVED SENSITIVE VALUE***",
        "passwordsalt": "***REMOVED SENSITIVE VALUE***",
        "secret": "***REMOVED SENSITIVE VALUE***",
        "installed": true,
        "trusted_domains": [
            "192.168.188.40"
        ],
        "datadirectory": "***REMOVED SENSITIVE VALUE***",
        "version": "28.0.0.6",
        "check_for_working_htaccess": true,
        "overwrite.cli.url": "http:\/\/192.168.188.40",
        "htaccess.RewriteBase": "\/",
        "dbtype": "mysql",
        "dbname": "***REMOVED SENSITIVE VALUE***",
        "dbhost": "***REMOVED SENSITIVE VALUE***",
        "dbport": "",
        "dbtableprefix": "oc_",
        "mysql.utf8mb4": true,
        "dbuser": "***REMOVED SENSITIVE VALUE***",
        "dbpassword": "***REMOVED SENSITIVE VALUE***",
        "default_phone_region": "DE",
        "memcache.local": "\\OC\\Memcache\\Redis",
        "memcache.distributed": "\\OC\\Memcache\\Redis",
        "filelocking.enabled": true,
        "memcache.locking": "\\OC\\Memcache\\Redis",
        "redis": {
            "host": "***REMOVED SENSITIVE VALUE***",
            "port": 0,
            "timeout": 0
        },
        "updater.release.channel": "beta",
        "maintenance": false,
        "theme": "",
        "logfile": "\/var\/www\/nextcloud\/data\/nextcloud.log",
        "log_query": false,
        "loglevel": 2,
    }
}

List of activated Apps

Enabled:
  - activity: 2.20.0
  - circles: 28.0.0-dev
  - cloud_federation_api: 1.11.0
  - comments: 1.18.0
  - contactsinteraction: 1.9.0
  - dashboard: 7.8.0
  - dav: 1.29.1
  - federatedfilesharing: 1.18.0
  - federation: 1.18.0
  - files: 2.0.0
  - files_pdfviewer: 2.9.0
  - files_reminders: 1.0.0
  - files_sharing: 1.20.0
  - files_trashbin: 1.18.0
  - files_versions: 1.21.0
  - firstrunwizard: 2.17.0
  - groupfolders: 16.0.0
  - logreader: 2.13.0
  - lookup_server_connector: 1.16.0
  - nextcloud_announcements: 1.17.0
  - notifications: 2.16.0
  - oauth2: 1.16.3
  - password_policy: 1.18.0
  - photos: 2.4.0
  - privacy: 1.12.0
  - provisioning_api: 1.18.0
  - recommendations: 2.0.0
  - related_resources: 1.3.0
  - serverinfo: 1.18.0
  - settings: 1.10.0
  - sharebymail: 1.18.0
  - support: 1.11.0
  - survey_client: 1.16.0
  - systemtags: 1.18.0
  - text: 3.9.1
  - theming: 2.3.0
  - twofactor_backupcodes: 1.17.0
  - updatenotification: 1.18.0
  - user_status: 1.8.1
  - viewer: 2.2.0
  - weather_status: 1.8.0
  - workflowengine: 2.10.0
Disabled:
  - admin_audit: 1.18.0
  - bruteforcesettings: 2.8.0
  - encryption: 2.16.0
  - files_external: 1.20.0
  - files_rightclick: 0.15.1 (installed 1.6.0)
  - richdocuments: 8.3.0-beta.1 (installed 8.3.0-beta.1)
  - richdocumentscode: 23.5.503 (installed 23.5.503)
  - suspicious_login: 6.0.0
  - twofactor_totp: 10.0.0-beta.2
  - user_ldap: 1.19.0
  - workflow_script: 1.12.0 (installed 1.12.0)

Nextcloud Signing status

No response

Nextcloud Logs

No response

Additional info

I am not the only one: https://help.nextcloud.com/t/fourth-beta-of-nextcloud-28/174502/10

[Nils160988]

It doesn't help/fix this issue, but for reference #21313

[Pytal]

Upstream fix perry-mitchell/webdav-client#360