Ok that's pretty easy to reproduce:
- Finish a race in championship mode
- Spectate AI, front camera
- AI reposition itself, the screen goes back
- Skip with Pause key
- Score is missing (there are sounds still)
You have to press a key until the pause menu appears to go to the next race. To reproduce this bug I suggest to spectate RV Loco in Supermarket.
Report issues and bugs here.