Are you sure about that? Has hatred changed in the last few years? Used to be that although hatred was one-sided, it was possible to restore more reasonable relations again later on. You could unilaterally end your hatred of another realm, but there would be significant penalties across your own realm for doing so. Something to do with how you've previously denounced those people as less than human, devil incarnate etcetera and the common people aren't about to just forget about all that at the click of your fingers. It would only bump you back up to war status as well.
I don't believe that was ever the case. Once Hatred was declared, the declaring realm could NOT end the war. There was simply no option to declare a cease fire with the Hated realm. That's the whole point of declaring Hatred: You force the realm to fight the war to the end. It's "you go or I go" situation. The only way out of a Hatred declaration was to get
the other realm to propose a cease fire. The realm that declared the Hatred could then accept the proposed cease-fire, resulting in the region stat hits, but ending the war.
If it operated in some other manner, then it is almost certainly a bug. Seeing as how Hatred is so rarely used, and that most of the realms that declare a Hatred usually end up getting destroyed, this feature doesn't get a lot in in-use testing.
