3 flasks bug
In the oasis of 3 wells you get a quest to fill it with earth blood from he'll pits. After you get the quest 3 empty flasks appears in your inventory. You need to tap a blood fountain in the start area of hell pits. If you don't have 3 empty flasks in your inventory you wouldn't get flasks with the blood.
But the thing is when you rest 1 empty flask get vanished from your inventory. You sleep again and another one vanish. Makes it impossible to finish the quest.
Lucky me I had slept only 1 time and after i realized the problem i found an inn in the same 3 wells oasis that was selling 1 empty flask.