Newly created users in the group aren't automatically displayed in the contact menu list

⚠️ 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

Using NC 28.0.3, when I click on the contact icon (top-right), newly created users in the group aren't automatically displayed in the list. On the other hand, users that have been created before NC 28.0.3 are always well displayed in the list.

By typing the user in "Search contacts ...", newly created users are well displayed. Also if I click on "Show all contacts", all users in the group are well displayed.

Steps to reproduce

1. Using NC 28.0.3, create a new group and new users on the "Users" admin page
2. Login to one User account in the group
3. Click on the contact icon (top-right)
4. See that the newly created users in the group are not automatically displayed in the list

Expected behavior

When I click on the contact icon (top-right), new users in the group should be automatically displayed in the list.

Installation method

Community Web installer on a VPS or web space

Nextcloud Server version

28

Operating system

None

PHP engine version

PHP 8.1

Web server

None

Database engine version

MySQL

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

No response

List of activated Apps

No response

Nextcloud Signing status

No response

Nextcloud Logs

No response

Additional info

Bug present on latest NC 28.0.3 with Contacts app 5.5.3, only for newly created users on the "Users" admin page.

Start by reproducing the issue from the contact icon in Nextcloud Server 28.0.3 with Contacts app 5.5.3, then compare the initial list with Search contacts and Show all contacts. Trace the contact-menu entry point and verify that newly created group users appear immediately in the initial list, while existing behavior remains intact.