That is correct! Completing Daily Quests don’t award chests, only gold. So if you leveled a Hero and completed a Quest, you should have gotten gold and 1 chest.
The issue people are seeing is the post game screen will say that you got 2 chests, when you only got the correct amount of 1 and the gold reward from the quest, which you are getting, but there is not pop up for it.
Hope that clarifies the issue!