treaty breaker?

in my mori campaign my diplomacy is taking a hit because the honma keep canceling trade agreements with me and because the ouchi declared war on me after i vassalized them.

so now im a treaty breaker with everyone even though i havent declared war on anybody or broken a single treaty.

Yeah, I think that's a bit of a bug. I've gotten that from my trade partner's port province getting captured and automatically breaking the trade agreement.

this happened to me in my shimazu campaign when I was allied with two factions and one declared war on me. the other refused to join the war (joining against me instead) and I got a penalty in my relations with them for dishonoring a treaty!