How to reproduce:

1. Open a new project
2. Create a cube
3. In the Lighting window, set the Ambient Source to Gradient and change the colours to be flamboyant and striking
- For results to be even more clear, you may also disable the Directional Light
4. Set the Cube to be Static
5. Save and Bake the scene
- Note how the cube is now coloured exclusively in the "Sky Colour" part of the Gradient
- This also happens in larger scenes with multiple objects