1. Open the attached project
2. Open the available scene
3. Open the curve editor by clicking the curve component in the 'Curve' gameobject
4. Create a curve ranging from y: -1 to y: +1
5. Save the curve as a preset, by clicking the bottom left Gear icon and 'New'

Selecting the preset from the bottom list creates incorrect curve. Some of the curves points have been moved to y: 0
Selecting the preset form the Preset grid sets the curve as it was saved. (see gif attached)