I encountered some bugs:
1.stamina 10 minutes before the race starts 55% and the race finishes to 72%
2.speedometer is not accurate, car stop speed 300km / h
3. ads do not appear but can directly part free
The result of the tire research shows the number 53 but in the lower statistics of the other teams, I see my control research 55 which should have my research tattooed almost parallel but not.
About this third "bug", I think you probably have some boost on tire economy and this bonus don't appear.
Please read this https://igpmanager.com/forum-thread/11813.