Hans sword fight doesn't end in Rattay

How do you end this fight? I keep fighting with him we just slug it out without end. What do I need to do? His health bar (in purple) rarely drops. I’m patched for the latest version. I put this in the bugs are also.

Thanks!

if u wanna win, u have to reduce the purple bar. You can use ointment to increase your agility and vitality. The purple bar is going down faster, if the target does not have any stamina/endurance anymore

OK. How with him? That’s the issue–the bar doesn’t drop!