There is a bug of the Nemesis mode

Dear Riot, Last night, I wanna to try the new game mode but the result has scared me. When the game start, there was no difference with the normal game, i thought it was just because we open the wrong mode. However, after i lose the game, it has counted me losing a solo rank game which i was in my bo3 series.I really want to cry. Help me please,Riot :( Your Best, LonelyEver