Unable to attack whilst in a war?

[unmerged(90214)]

Playing as Ireland and was at war with Leon/Galicia over a claim. I invaded a province and besieged the castle, and then I was attacked by Leon and they quickly retreated I guess (The battle lasted 4 days despite the two armies both being around 7k in strength with Leon losing around 50 men total). Then after Leon left the province they moved to re-enter the province and I was expecting an attack, which didn't happen. The Leonese army just existed in the same province as me. Then when I changed province they just followed me around 1 day later every time. Their allies then besieged one of my provinces. I raised some extra levies and went to attack them, except this time I was the one unable to attack. However, eventually I attacked the allies with my original army and they could attack. I then went back to the original Leonese army and they still couldn't initiate a battle with me (tested by landing a small force of 40 men in a province they promptly moved into the province but again no effect. Then I moved my original army into said province and was able to successfully attack?

This has never happened before to me and I even reloaded to the start of the war and the same effect was happening. However, I tested further and in a subsequent war no issues, everyone had battles with everyone.

It's a weird bug. Any ideas as to why it happened?

 

[K-vald]

Hmm, that sounds really weird indeed. Do you have that save of yours still around? If you have it it would be good if you could upload it here (or an external hosting site should your quota be full).

 

[BlckKnght]

Was Leon the target of your war, or were they an ally of your target?

If they were an ally it's possible that the alliance broke (due to a ruler's death, probably) and you were no longer at war with them. This could also explain why your initial battle with them ended abruptly after just a few days.