@Hoo It happened on ps4. The races were Brazil, Bahrain and Russia. It happened the same way @DarrenAH just explained. During the three incidents it was the exact same player that was able to move know as arildo 1987. I ended up losing around 300 skill rate because the only way to leave was to close out the game.
In three different races it gets stuck on the waiting screen before lights out. Only one player takes off but everyone else can't move.