http://screensnapr.com/v/i7ZvE3.png

As you can see I was playing Ezreal but the scores came up from the last game.

Before anyone trolls me for the summoners this was a premade and we were joking around with support morde and AD fizz.

Same thing happened to me, but I was playing Jayce.

A couple of people said here that they experienced this when finishing their promotion series. Was that the case for you guys too?

It could be.

I did get 2 or 3 wins in a row so if that's how you rank up then yes.

Can you upload your air client logs?

Instructions here: https://support.leagueoflegends.com/...f-legends-logs