This annoys me for a long time.
 
I currently run RR3 on iPhone 6+ with iOS 8.3.
 
I pause a race. The pause screen displays until the phone locks. Then I unlock the phone. Very likely, the first thing I see is the home screen rather than the paused game. I run RR3 again and my paused race is lost. I have to start a new race.
 
What do you feel if the 10-lapper Circuit des 24 Heures is paused at the 9th or even 10th lap and you have to do it from the very beginning?