Testing the cross platform multiplayer

Hello EA, I come to you to give you a feedback on the multiplayer.

- Bug on the player who opens the session because he has to leave to be able to do the race

- Cross platform test, impossible to invite players from different platforms in a session and on the steam side if you leave a session made by an original player, you can't join the session anymore.

- No button to join a session in cross platform mode which could be good to avoid asking for an invitation

I hope this will help you