When the Novorossiyan rebellion breaks out. The rebels auto win within 20 days and the russian empire is instantly annexed. No matter if you are winning or losing your war.

As you might imagine that compltley breaks the russian empire as a playable faction

Whoever controls Moscow instantly wins, what's the point of them raising a 60 unit army to your 20-40 units if that's the win condition? Either you rush for moscow and take it or you miss it