Visibility of shared address books cannot be set

Describe the bug

I have a "system user" that holds a "common address book".
That system user shares that address book to multiple groups.
In Contacts Settings of each user, the address book is available.
In some of them, it is visible as expected, on others it's "(hidden)".
In both cases, users cannot disable to view contacts of that address book (in contrast to own address books and the "Accounts" Nextcloud-wide address book.

Steps to reproduce

1. user 1 creates an addressbook A and shares it to user 2
2. user 2 enters "Contacts Settings" (low left)
3. as user 2, for each address book, check in "…" which options are available

Expected behavior

A user should be able to do both: display/include and hide/exclude contacts, for all address books.

Actual behavior

Some users cannot see the contacts shared to them at all and may not activate to see them.
Other users cannot hide the contacts shared to them from the view.

Contact version

8.2.1

Operating system

Arch Linux (on the client and on the server)

PHP engine version

PHP 8.3

Web server

Nginx

Database

MariaDB

Additional info

In the USER's Contacts Settings, there is an option to "unshare" an address book. How is that supposed to work if the address book was shared to a GROUP?