No Chest Received
You can get chests in ARURF right? I'm pretty sure I've gotten them before. Well, I just got an S on Leona, who I did not have a chest from. I have 1 chest available. I did not receive a chest.
I made this post RIGHT after the game, since I checked immediately to see why no chest, so there isn't a sizeable time difference between me getting an S and me noticing I should have gotten the chest.