Please post a save...in theory the whole theater should be unblocked (i.e. not darkened), at least was the intent during the beta and worked likewise.
As for the regions concerned, the event lists "$AITheater_Danes_Operations", which according to game data (in Areas.inc) is the following areas:
In Germany: Schleswig, Mecklemburg, West Pommern, Bremen, Hannover, Braunschweig
In Scandinavia: everything in Denmark, Norway and Sweden, but not Finland
So indeed Ost Pommern and Holstein looks missing....will need fixing IMHO