I'm not sure if this has been noted anywhere, but I'm currently playing an agressive game as the Hissho, and am at war with an alliance. The issue is that the diplomacy screen isn't treating the relationship as though it is at war, but rather as hostile powers at peace/cold war. This means that the enemy alliance hates me, and will not agree to a peace deal involving any less that nearly all of my recourses. It should also be noted that I am unable to force a truce, as there is no note of war momentum. The interface only shows influence from our empires, and that is also bugged out because we are currently at war. Just wondering if anyone else has had a similar issue with this.

Please post a save and diagnostic files :)

It looks like this :

https://www.games2gether.com/amplitude-studios/endless-space-2/forums/114-bug-reports/threads/34926-at-war-or-not?page=1#post-289156 

And also, the Riftborn faction accepts a peace agreement in exchange for all my resources.