I think I've found one bug for sure, and another a 'maybe'.
First: As France and in war with Russia, Dresden (Saxony) has surrendered to me three times. (Note: this is/was French territory.) At the end of each turn, Dresden surrenders to the quite big army I have in Saxony, but at the start of every new turn, Saxony is still occupied by the Russians [&:] I don't get it.

Second: As said, I'm at war with Russia and now France is littered with Russian troops. Militia forces, Cossack infantry divs, Cossack cavalry, generals - they seem to pop up from the ground...! I beat them, take them prisoner and *poof*, next turn there are suddenly even more separate Russki units in France. Even in the western provinces so they're not coming via Switzerland or whatever - they just pop up. What's up with that? Is it a bug?