Team red & blue

I just want to know if i missed some patch notes or it's a bug or something else.

I noticed that when i'm on the left side on the map and first pick, in champion select, i play in the red team like 8/10 games. Usually first pick go to the blue team and last one to the red team but this is not how it goes in these days.

Lemme know if u have noticed it or if it's normal because of a change that i have missed.