I mean that daily quests do not award Chest.
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Huginncord:
Leveling up a Hero in the game will always level your Player Level, because your Player Level is a sum total of your Hero Levels. Your Player Level dictates the rarity of the Loot Chest you get from leveling up a Hero. Every 5 levels that chest will be Rare, and every 25 levels that chest will be Epic.
Prometheus:
HotS account level = sum of levels of all heroes - overall number of heroes in game.
Whenever you level up a hero, you level up account level.
For every account level, one common loot chest is given.
For every 5th account level, one rare loot chest is given instead of a common one.
For every 25th account level, one epic loot chest is given instead of a rare one.
For every 10th level of any hero , one hero loot chest is given in addition to a chest for account level.
I have enough knowledge in this topic, since my information is just a compilation of blue posts here and on Reddit and my own experience.
And I’m surprised that you do not search before reporting a bug. Read Forum Guidelines and Bug Reporting .
This bug was reported a lot of times and in each post Blizzard robs players . No, they do not, unfortunately, players just do not know how level system works and do not know how to use search.
By the way, this bug was fixed. I hope, now much more players know how HotS level system works.
Please, do not answer to this post, this is Bug Report branch.