Something rather confusing has happened to me in a relatively short time. Provinces suddenly come under my control, usually with a few decent troops and plenty of apeleutheroi, and at the same time enemy factions declare war on me. I simply don't know if these factions were controlling the provinces at the time, but they're nearby, so it seems likely. Is this simply a result of provinces rebelling and choosing to side with me? What's most confusing is that I get no message explaining what's happened, so it once took several turns before I even realized the province was mine. What is this? Rebellion or a bug?