Game says campaign completed, but I haven't fulfilled the victory conditions yet

[Paltmull]

I'm playing as Macedonia (on EB 1.2), and have taken most - but not all - of the provinces required in the victory conditions (that you get when clicking the questionmark button in the faction summary window):



And suddenly, after capturing Alexandreia, I get the victory screen. I haven't even taken a single province in Italy yet.

So my question is: are the victory conditions outdated, or is there something wrong with my game?