Undead mission The fall of silvermoon crushes the game

After the secondary objective “silvermoon runners” is completed the game crushes. It does that even if you load a save file. Can’t complete the mission. I was last playing on hard mode.

I passed it after 350 saves and crushes. But then I met the Wrath of Betrayer mission that is not playable at all, its crushing lettery every 0.5 seconds. And yea, I am loosing all campain progess with every new update. Niceeeeee