Did not receive correct reward
I was playing the Alchemy Artisan event on PC. When I got my first win, I was supposed to receive a card that is supposed to be "at least rare" as the reward states. However, I received an uncommon rarity card (silver symbol). The card is "Dormant Grove". This seems to be a bug. The card was supposed to be a rare at least. Fun fact: Dormant Grove was a card that I used in the deck I won with. Could this be related?
Hans Karrer#31826 shared this idea
It's more likely Dormant Grove was an ICR from your daily wins.