Summary of the bug :
When using rear-view camera and trying to turn left while accelerating does nothing, only when not-accelerating does the car turn to the left. However, that is not the case when turning right, that does work. May also be present in other camera modes, but haven't tried it.
Which version of Grip were you using :
When does this happen : During race
On which track did it happen : First saw this on Skytrack 1, haven't tested it on other tracks.
On which speed did that happen : Wild
How often does this happen : During the entire duration of the race
How to replicate the steps : Press and hold Arrowup + Arrow Left + V during race