When you flip your car, and your tires have speed (ie: you get 260, and you press clutch, then you go to neutral gear and your tires will be at 260 and they will be turning.
But if you stop your engine, your tires get 0 speed, and u dont see that they are moving, but if you start again your engine, they'll turn again.

With engine off, car is removed from physics calculations. So no bug - it is intended.

it didnt happen before on patch x

video is attached:

Quote from josemspain :

it didnt happen before on patch x

video is attached:

Quote from tristancliffe :

With engine off, car is removed from physics calculations. So no bug - it is intended.

like he said..