Ok so the root of the message is the chan mode +p. But mIRC 7.52 is showing different raw messages than 7.47. So there is change in behavior somewhere between 7.47 and 7.52, I do not have any in between versions to check futher. This is the same fresh install clean settings just switching between two versions of mIRC.

Code:
7.47 debug window

<- :ChanServ!service@rizon.net NOTICE lladq :ChanServ is inviting pballz to #pballz.
<- :irc.usa-talk.net NOTICE %#pballz :ChanServ is inviting pballz to #pballz.
<- :pballz!ty@pball.tigre.lives.forever JOIN :#pballz
<- :ChanServ!service@rizon.net MODE #pballz +o pballz


Code:
7.52 debug window

<- :ChanServ!service@rizon.net NOTICE lladq :ChanServ is inviting pballz to #pballz.
<- :ChanServ!service@rizon.net INVITE pballz #pballz
<- :pballz!ty@pball.tigre.lives.forever JOIN :#pballz
<- :ChanServ!service@rizon.net MODE #pballz +o pballz



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