This is strange, cannot decide if it is a bug or WAD.
As the North German Confederation, I declared war on Austria in 1866. I had no claims on any Austrian territory. I conquered the three border provinces surrounding Prague, including Pilsen and Koeniggratz. The Austrians offered to pay me reparations for peace, which I accepted. I received no territory.
Immediately after the peace was agreed to, the three provinces began showing up in the list of territories shown in the F6 part of the ledger. When I looked at the map filter for national and claimed territories, all three of these provinces were gray, shown as part of the German nation. Even though they were under Austrian control, and I was no longer occupying them. I get regular infringement casus bellis now because these territories are controlled by Austria.
Does anyone know if this is valid, and why it occurred?