Finished the quest, got 200 copper and the priest ring as a reward, quests stays incomplete and didnt give any XP , I might be wrong but I'm 99% sure there is nothing more to this quest

I have this bug, too.

 

Reported here with a potential workaround:

https://forums.obsidian.net/topic/98409-resolving-the-harsh-medicine-quest-is-partly-bugged/

Thanks for the link! Since we have the workaround and the issue logged we'll use the other post from here on. Apologies for the lapse in reply!

 

Best,

 

-Caleb

I now have a different bug with game version 3.0+.

Finished the quest, got the 200 cp and did not get the ring.

Someone else reported the same bug on another quest on Hasongo (not receiving the item reward: Strand of Favor).