Nothing odd about this? Well, about 2 days ago, I defeated Austria as Prussia and made them admit hegemony, I also humiliated them and took a bunch of land. I was so harsh on poor Austria that it dropped from rank 5 to rank 11. Now, naturally, it takes a few months for them to lose their status as a great power, but for some reason, they were in my sphere, despite the fact they were a Great power. I wondered what would happen if I hit the "form germany" button and this is what happened.