This is a known problem, a new issue that surfaced recently, I think related to the latest Windows update. I hear that it's related to having multiple monitors connected - solution is only have the one connected you are racing on. Another solution is to use Content Manager to run your races. I also hear that if you turn off full screen rendering in game (I don't because it plays havoc with my framerate).I've tried validating the game twice
ran it with no third party apps
But no success, I can enter a race with no problem, but once I leave, I have to use the task manager to shut down the game because I cant click on anything (can't even alt+f4)
any other things I can try
You can use this temporary fix
https://i.imgur.com/G3AjHpD.jpg