Why is there still blue side bias in League?
Since the beginning of League, blue side has always had an advantage over the red side and it is obvious and everybody can see it. It happens in solo queue and competitive, where the blue side always wins the majority of games even if the red side has a better team composition.
I don't think it is because of the camera angle because the majority of players should be able to play with unlocked camera anyway. There must be other reasons for blue side bias still existing in League.