[CLIENT] S rank games not granting chest.

First of all, I've earned 3 chests. One on Jhin, Ashe, and Soraka. I am not talking about games in which I played any of those champs.

My profile shows I have one more chest to earn. The last game I played (as of my writing this) was as Shyvana, and the end screen chat indicated that our Katarina got an S rank. My Shyvana icon's chest is still grayed out.

Here is the match history link:

http://matchhistory.na.leagueoflegends.com/en/#match-details/NA1/2127579617/42806535

This is not the first time this has happened. After I got my 3rd chest, I've been in (a surprising number of) S rank games on champs that were not the initial three I mentioned.