[Bug]: The VirtualList of file app drops items on the bottom of the list (while Sidebar content is displayed)

[printminion-co]

⚠️ 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

The VirtualList of file app does not render the upper part of the file list (when user inspects lower part of the list) while Sidebar content is displayed.
virtual_list_dropping_file_items-2024-06-04_16.46.09.webm

Steps to reproduce

1. install https://github.com/nextcloud/server/releases/tag/v29.0.1
2. install and activate activity app https://github.com/nextcloud/activity/releases/tag/v29.0.2rc2
3. upload folder with images (in order to make the file list scrollable)
4. scroll down to the end of the list
5. click in last x files rows (modified field) in oder to
6. Observe the upper half of file file items disappears.
7. Scroll a bit. Observe upper half of the file items appears.

Screencast: virtual_list_dropping_file_items-2024-06-04_16.46.09.webm

Expected behavior

The clicking on file items in order to bring Sidebar information on the end of the list does not drop file items in the list.

Installation method

Community Manual installation with Archive

Nextcloud Server version

29

Operating system

Debian/Ubuntu

PHP engine version

PHP 8.1

Web server

Apache (supported)

Database engine version

SQlite

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

Fresh Nextcloud Server install

Are you using the Nextcloud Server Encryption module?

None

What user-backends are you using?

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

Configuration report

{
    "system": {
        "defaultapp": "files",
        "appstoreenabled": false,
        "updatechecker": false,
        "debug": true,
        "default_language": "de",
        "default_phone_region": "DE",
        "knowledgebaseenabled": false,
        "apps_paths": [
            {
                "path": "\/var\/www\/html\/apps",
                "url": "\/apps",
                "writable": true
            },
            {
                "path": "\/var\/www\/html\/apps-custom",
                "url": "\/apps-custom",
                "writable": true
            },
            {
                "path": "\/var\/www\/html\/apps-external",
                "url": "\/apps-external",
                "writable": true
            }
        ],
        "theme": "foo-theme",
        "overwriteprotocol": "http",
        "trusted_domains": [
            "localhost",
            "localdev",
        ],
        "passwordsalt": "***REMOVED SENSITIVE VALUE***",
        "secret": "***REMOVED SENSITIVE VALUE***",
        "datadirectory": "***REMOVED SENSITIVE VALUE***",
        "dbtype": "sqlite3",
        "version": "29.0.1.1",
        "overwrite.cli.url": "http:\/\/localhost",
        "updater.release.channel": "git",
        "installed": true,
        "instanceid": "***REMOVED SENSITIVE VALUE***"
    }
}

List of activated Apps

Enabled:
  - activity: 2.21.1
  - cloud_federation_api: 1.12.0
  - dav: 1.30.1
  - federatedfilesharing: 1.19.0
  - federation: 1.19.0
  - files: 2.1.0
  - files_reminders: 1.2.0
  - files_trashbin: 1.19.0
  - lookup_server_connector: 1.17.0
  - oauth2: 1.17.0
  - provisioning_api: 1.19.0
  - settings: 1.12.0
  - theming: 2.4.0
  - twofactor_backupcodes: 1.18.0
  - workflowengine: 2.11.0
Disabled:
  - admin_audit: 1.19.0
  - comments: 1.19.0 (installed 1.19.0)
  - contactsinteraction: 1.10.0 (installed 1.10.0)
  - dashboard: 7.9.0 (installed 7.9.0)
  - encryption: 2.17.0
  - files_external: 1.21.0
  - files_sharing: 1.21.0 (installed 1.21.0)
  - files_versions: 1.22.0 (installed 1.22.0)
  - googleanalytics: 0.0.2
  - metadata: 0.20.0
  - sharebymail: 1.19.0 (installed 1.19.0)
  - systemtags: 1.19.0 (installed 1.19.0)
  - testing: 1.19.0
  - updatenotification: 1.19.1 (installed 1.19.1)
  - user_ldap: 1.20.0
  - user_status: 1.9.0 (installed 1.9.0)
  - weather_status: 1.9.0 (installed 1.9.0)

Nextcloud Signing status

No response

Nextcloud Logs

No response

Additional info

No response

[susnux]

Fixed with 29.0.3 in #45611