Steering Curve property does not affect steering

Setting the Steering Curve of a vehicle movement component has no affect on the turning of the vehicle during play.

1. Open UE4 Editor (Blueprint Vehicle Template)
2. Open the Sedan blueprint
3. Select the VehicleMovement component and find the Steering Setup heading in details panel
4. Set all points of the Steering Curve to a value of 0
5. Compile and save the blueprint then PIE

Result:
The car will continue to drive and turn normally

Expected:
Car would be unable to turn with all values set to 0.