The ref was a joke , his school teacher authoritive attitude and not letting the game run absolutely ruined the game , and as a typical sub standard teacher if you challenge an incorrect decision you get rebuked, the amount of fouls Leipzig committed with no punishment was bordering hilarity.
Mahrez's offside when the defender headed the ball and started a second phase of play was amateur night as was the VAR on Sterling's nailed on penalty , to win the Champs league you need UEFA and officials in your pocket ,hence its the usual established clubs who win it and why we boo their shitty anthem.