In the op control list in the address book i added two channels (#test1, #test2) with the mask *!*@* that everbody who joined the channels get @. The problem is the second and descending channels in the list dont work. Of course the control is enabled.
I tested it with v6.03, v6.12 and v6.16.

So my question is it a bug or a feature?

With v6.16

/aop *!*@* #aopTest1,#AopTest2
also
/aop *!*@* #aopTest1,#aopTest2,#aopTest3,#aopTest4,#aopTest5,#aopTest6

All works like intended.
Every user who joins will be opped by me.

I would say it's somekind of malfunction in your end.

The problem is the space between the channel names.
should be #test1,#test2

an example for the problem:
when u add channels for auto op over the address book control dialog (important) like

1. entry
Address: *!*@*
Channels: #test01
Network: TestNET

2. entry
Address: *!*@*
Channels: #test02
Network: TestNET

and so on ... only the first one works. /aop is clever and puts all the channels in one entry. i wasnt ;-)