Leaver Buster Glitch

So after a very rough week of internet crashes, and high ping games i was placed in the "lower priority que" i have played +10 matches of League of legends since without leaving and i still have the "lower priority que" on me. So everytime i want to play a game of Legend of the poro king i have to wait an extra 5 minutes... even though i already did my 10 matches of waiting.... Is this a glitch or is it intended?