Precondition:

• Create two host groups e.g. BB and random bb
• Create host BB and link to host group BB
• Add several hosts that contain bb characters and add them to the host group "random bb"
  OR import via e.g. ZBX-23181_export_hosts.yaml

Steps to reproduce:

• Go to Monitoring->Problems
• Select 'Host groups' BB and apply the search
• Write bb in the 'Hosts' multiselect field and check suggested results.

Result: multiselect contains hosts from other host groups.

Expected: only host(s) from previous host group(s) should appear in multiselect suggest.