Help with Action conditions

[Hy3n4]

Hi everybody,

I have created an action with the condition A and B and C and (D or E or F or G).

I suppose that this action has to be fired only if conditions A and B and C are matching and one of the D,E,F,G is matching.

But it seems the OR condition in brackets is not working as it should.

Here are detailed condition settings.

A Tag APP not like SMSWS
B Maintenance status not in maintenance
C Trigger severity = Disaster
D Host group <> SQL Servers
E Host group <> Exchange 2010
F Host group <> Exchange 2003
G Host group <> CDCARGO OSCAR

so based on this details I believe that action should be fired only when eg:
Tag APP not like SMSWS (working) AND Maintenance status not in maintenance (working) AND Trigger severity = Disaster (working) AND Host group <> Exchange 2003 (Not working).
The action is fired even if Host group IS Exchange 2003. The same behavior is happening when using TAGs with OR condition.

Do I understand conditions wrong or its some kind of bug?

Zabbix version: 3.2.3
OS: Centos 7

Thanks for support