Overall bug.

[Hax]

Don't know if you guys have heard of it yet, probably yes, but still.

I am playing as the Romani faction, and it's going pretty well. Destroyed Epeiros and conquered all cities from Patavium up to Thermon.

Strangely however, every time I notice that all my Government buildings are broken (EG: Italian Government, Romanized Province, etc)

Is it just me, or is this bug common?

[MarcusAureliusAntoninus]

This will happen if you play two different factions without exiting out of RTW. In order to prevent this, if you are going to play one faction then switch to a different campaign as a different faction, exit out of RTW and restart the game first.