[CLIENT] [LOOT] Did not receive chest for first S- on Taric yesterday

I earned an S- on Taric yesterday, and to the best of my knowledge I have not received a chest for Taric since the new season started. I am not at a computer with LoL installed at the moment, so I can't click the chest tab to confirm this, but I will do so the next time I am able. However, chestfinder.me reports that I have not received a chest for Taric this season. I included a link to the game summary, confirming that I did earn an S- for that game.

To reproduce: Don't know, this is probably erratic (I have received a chest for one other champion, or seen my partner receive one).

How frequent: Has only happened once so far, but I have not played many games since the season started. I don't recall it occurring in preseason or earlier, but it might have?

EDIT: Oh you know what, I don't know if I had a chest available at the time -- until recently I haven't had that particular problem (I'm not very good at LoL, lol). I'll check that tonight too. EDIT again: Yeah this appears to be the case, ignore.