Homecity only levels up sometimes after skirmish games

Hello friends,

im having a lot of fun with this game, but for some reason my exp from my skirmish matches only counts sometimes.

Im playing the DE version of the game.

I already saw that i should click the statistics tab after ive finished a game and it works maybe 50% of the time.

Is there anything else I might be overlooking?

All skirmishes are played without cheats or handycaps.

Greetz MD