How to reproduce:

1. Open attached project
2. Open scene RT_3D_MIPMAP_SCENE.unity
3. Play the scene
- Note the sphere turns red
4. Modify the slider in the Game View
- Note how the Sphere does not change in colour and remains red
- The colours should be as follows: red for LOD 0, yellow for LOD 1, green for LOD 2, blue for LOD 3, purple for LOD 4

- Reproduced in Version 5.4.0b19 (57f24ff20089), Version 5.3.5f1 (960ebf59018a)
- Blocked from testing 5.2