Bug 1:
For some reason game seems to think my character has the wrong title (
https://imgur.com/a/osf9LTs) It's not just this event, but all of them reference him as 'Prince' instead of Duke. Reloading doesn't fix it and not sure when it even appeared in my save. Fixes itself on character death.
Bug 2:
Strange bug when I was raiding Poland, suddenly all the raid sieges stopped and refused to re-siege. Polish armies are still hostile, moving through provinces and back in/out of friendly territory doesn't fix it either. Reloading did nothing. However console killing the king worked. However I had/have no relations, truces or anything with anyone in Poland. So I presume it's a bug? (
https://imgur.com/a/osf9LTs)
Apologies as I can't work out what caused either and not sure if either is present in Vanilla.