[Bug]: README.md not shown in subfolders (404 error on load) in Files app with custom css (Nextcloud 31.0.3)

[Martinfst]

⚠️ 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

When placing a README.md file inside a subfolder, it is not displayed in the Files app as expected. The inline README preview works perfectly in the top-level folder, but in subfolders it fails to load. Using custom css to increase bottom padding:
CSS used:

.readme .content {
    overflow-y: auto !important;
    padding-bottom: 100px !important;
}

The browser console shows a 404 error when Nextcloud tries to fetch the README.md file, and it appears that the wrong path is used.

Steps to reproduce

1. Create a subfolder, e.g., /Documents/Policy

2. Upload a README.md file inside that subfolder

3. Navigate to the subfolder in the Nextcloud Files app

4. Observe that the README preview does not appear

5. Check the browser console — a 404 error appears for:

   GET /remote.php/dav/files//README.md

6. The correct path should be:

   /remote.php/dav/files//Documents/Policy/README.md

Expected behavior

The README.md file inside a subfolder should be displayed automatically above the file list, just like in the top-level folders.

Nextcloud Server version

31

Operating system

Debian/Ubuntu

PHP engine version

PHP 8.3

Web server

Apache (supported)

Database engine version

MariaDB

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": {
        "instanceid": "***REMOVED SENSITIVE VALUE***",
        "passwordsalt": "***REMOVED SENSITIVE VALUE***",
        "secret": "***REMOVED SENSITIVE VALUE***",
        "trusted_domains": [
            "***",
            "****",
            "***",
            "***",
            "***",
            "***",
            "***"
        ],
        "overwritehost": "***",
        "overwriteprotocol": "https",
        "datadirectory": "***REMOVED SENSITIVE VALUE***",
        "dbtype": "mysql",
        "version": "31.0.3.2",
        "overwrite.cli.url": "http:\/\/localhost",
        "dbname": "***REMOVED SENSITIVE VALUE***",
        "dbhost": "***REMOVED SENSITIVE VALUE***",
        "dbport": "",
        "dbtableprefix": "oc_",
        "mysql.utf8mb4": true,
        "dbuser": "***REMOVED SENSITIVE VALUE***",
        "dbpassword": "***REMOVED SENSITIVE VALUE***",
        "installed": true,
        "mail_smtpmode": "smtp",
        "mail_smtpsecure": "tls",
        "mail_sendmailmode": "smtp",
        "mail_from_address": "***REMOVED SENSITIVE VALUE***",
        "mail_domain": "***REMOVED SENSITIVE VALUE***",
        "mail_smtphost": "***REMOVED SENSITIVE VALUE***",
        "mail_smtpport": "587",
        "mail_smtpauth": 1,
        "mail_smtpname": "***REMOVED SENSITIVE VALUE***",
        "mail_smtppassword": "***REMOVED SENSITIVE VALUE***",
        "maintenance": false,
        "maintenance_window_start": 1,
        "memcache.distributed": "\\OC\\Memcache\\Redis",
        "memcache.locking": "\\OC\\Memcache\\Redis",
        "redis": {
            "host": "***REMOVED SENSITIVE VALUE***",
            "port": 6379
        },
        "mail_smtpauthtype": "LOGIN",
        "default_phone_region": "NL",
        "htaccess.RewriteBase": "\/",
        "memories.db.triggers.fcu": true,
        "memories.exiftool": "\/var\/www\/nextcloud\/apps\/memories\/bin-ext\/exiftool-amd64-glibc",
        "memories.vod.path": "\/var\/www\/nextcloud\/apps\/memories\/bin-ext\/go-vod-amd64",
        "memcache.local": "\\OC\\Memcache\\APCu",
        "memories.vod.ffmpeg": "\/usr\/bin\/ffmpeg",
        "memories.vod.ffprobe": "\/usr\/bin\/ffprobe",
        "theme": "",
        "loglevel": 2,
        "default_timezone": "Europe\/Amsterdam",
        "enabledPreviewProviders": [
            "OC\\Preview\\Movie",
            "OC\\Preview\\TIFF",
            "OC\\Preview\\HEIC",
            "OC\\Preview\\Image"
        ],
        "default_timezone=Europe\/Amsterdam": "",
        "app_install_overwrite": [],
        "appstoreenabled": true
    }
}

List of activated Apps

Enabled:
  - activity: 4.0.0
  - app_api: 5.0.2
  - bruteforcesettings: 4.0.0
  - calendar: 5.2.1
  - circles: 31.0.0
  - cloud_federation_api: 1.14.0
  - comments: 1.21.0
  - contacts: 7.0.6
  - contactsinteraction: 1.12.0
  - dashboard: 7.11.0
  - dav: 1.33.0
  - deck: 1.15.0
  - federatedfilesharing: 1.21.0
  - federation: 1.21.0
  - files: 2.3.1
  - files_antivirus: 6.0.0
  - files_downloadlimit: 4.0.0
  - files_pdfviewer: 4.0.0
  - files_reminders: 1.4.0
  - files_sharing: 1.23.1
  - files_trashbin: 1.21.0
  - files_versions: 1.24.0
  - firstrunwizard: 4.0.0
  - logreader: 4.0.0
  - lookup_server_connector: 1.19.0
  - memories: 7.5.2
  - nextcloud_announcements: 3.0.0
  - notes: 4.12.0
  - notifications: 4.0.0
  - oauth2: 1.19.1
  - ownershiptransfer: 1.1.0
  - password_policy: 3.0.0
  - photos: 4.0.0-dev.1
  - privacy: 3.0.0
  - profile: 1.0.0
  - provisioning_api: 1.21.0
  - recommendations: 4.0.0
  - related_resources: 2.0.0
  - richdocuments: 8.6.4
  - richdocumentscode: 24.4.1303
  - serverinfo: 3.0.0
  - settings: 1.14.0
  - sharebymail: 1.21.0
  - support: 3.0.0
  - survey_client: 3.0.0
  - systemtags: 1.21.1
  - text: 5.0.0
  - theming: 2.6.1
  - theming_customcss: 1.18.0
  - twofactor_backupcodes: 1.20.0
  - updatenotification: 1.21.0
  - user_status: 1.11.0
  - viewer: 4.0.0
  - weather_status: 1.11.0
  - webhook_listeners: 1.2.0
  - workflow_media_converter: 1.13.5
  - workflowengine: 2.13.0
Disabled:
  - admin_audit: 1.21.0
  - encryption: 2.19.0
  - files_external: 1.23.0
  - mail: 5.0.0 (installed 5.0.0)
  - suspicious_login: 9.0.1
  - twofactor_nextcloud_notification: 5.0.0
  - twofactor_totp: 13.0.0-dev.0
  - user_ldap: 1.22.0

Nextcloud Signing status

No errors have been found.

Nextcloud Logs

Additional info

No response

[Martinfst]

Minor update
Using the android nextcloud client, the readme.md files are shown correctly in both top folder as well as all sub-folders.

[Martinfst]

Note: In Nextcloud 31.0.3, the inline README.md preview appears to use a Vue component (e.g., ) rendered at the top of the file list.

This component has a dynamic data-v-* attribute and no fixed class like .readme, making it hard to style or debug.

Inconsistent rendering is observed:

• Sometimes README.md appears after folder creation
• Sometimes not shown at all in subfolders
• Styles cannot be applied via Custom CSS due to scoped rendering

[Martinfst]

My initial problem is shown in the picture attached. While investigating, I also stumbled on the 404 error of the .md file. Hope this clarifies.