Attack & Defend Regions Quest

if you having several atk/def quest on same region, example hard and nightmare, when the quest icon on map said hard mode, after you ended the battle, you actually finished nightmare quest one.

I had the same thing yesterday. A hard and NM quest to defend. I was planning on doing both anyway but when i completed the Hard - I was credited with the NM.

Personally, does not hurt my feeling as both quests gave good rewards(one 3 resources and the other all 4) but does seem like a bug.

Thanks.