I received a key last night from a random 28 POE award. It wasn't in a chest it was a random drop on the rewards screen after I completed it. It took me roughly 20 runs to get one I also got my weekly one my first run as well.
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I haven't seen that happen yet, but it's good to know. Hopefully they straighten this out. At the moment it's similar to beating a raid but getting no rewards because you didn't have "radiant keys" or the like.