Can't Complete Training Mastery for Achievement 4/5

Hi! I’m having trouble getting the game to register that I completed the training mastery “The Fundamentals” achievement. I’ve done all the Art of War challenges and I have also completed the Norman campaign but for some reason, I can’t complete “Time to War” no matter how many times I retry the final Art of War mission or the first Norman Campaign mission. For reference, I have images of the completed Art of War challenges and Norman Campaign in an imgur link since I’m unable to attach multiple media pictures to the post apparently.

Hello, same for me.
I can advance on other masteries, but not on this one.

Looks like last patch broke it ?