Not getting a vote/rank after a match

So, in this match: http://matchhistory.euw.leagueoflegends.com/en/#match-details/EUW1/3414674554/42013767?tab=overview

I didn't get any ranking (D, C, B, A, S or whatever), is it a bug or is it because I already am Mastey 7 on Aurelion Sol and this affects the result somehow?