Steps to reproduce:

1. Create a Host Group A and Host Group B.
2. Create a Host and assign it to both created groups.
3. Create a User Group and assign it Read-Write permissions for Host Group A.
4. Create a User of Zabbix Admin type and assign it to the created User Group.
5. Login as created User and open the created Host.

Result:

Observe that only Host Group A is shown in Groups list, although the Host belongs to both Host Group A and Host Group B.

Expected:

Host Group B (and all other inaccessible groups) should be listed in Groups list as inaccessible.