It's me again, regarding the same issue of hostility levels, this time in beta 11. I've carried over my save game from beta 10, playing the Philip scenario. This time I completed the Paeonian king objective, which is supposed to increase their hostility against me. But their hostility did not change. Is this a bug, or working as intended?
On a related note, the hostility levels do change as expected when I break truce.