Getting secondary role more often than main role? and its mid???

what is this? did something change in the algorithims this patch? because I am getting mid WAY too often. I'd say its around 70% of the time I get my secondary, and that its a popular role like mid I'm surprised.

anyone else have similar issues?

I'm plat 3, 40-60 LP ish right now, maybe its the elo? are there less mid lane mains higher up?