Same problem here. Hope they fix this soon.
Edit: Tried daweed's workaround. It worked. I had to select Shadowheart first though, else I didn't have an option to attack.
I also tried the "attack"-fix with another similar issue - Reading the Necromancy of Thay, which also hangs. Did not work with that however.

Last edited by Axalon; 09/10/20 03:13 PM.