Were you playing as a patrician? We've added prevention mechanics for patricians so that they're no longer able to go to war for the claim of their republic. It was never intended for them to be able to do so.
If you're not a patrician character please provide a savegame where we can see the issue in action.
Thanks for the report!
If you're not a patrician character please provide a savegame where we can see the issue in action.
Thanks for the report!