Reproduces on Master (bcdb37f295) and 4.10.0

Repro steps:
1. Use Universal RP
2. Create a PBR Shader
3. Create a Color property
4. Set the Color mode to HDR
5. Plug the Color property into Albedo
6. Edit color, set the color intensity to 10
7. Set the color mode of the property to default
Expected result: the values become clamped and the shading of the sphere returns to normal
Actual result: the shading of the sphere is still blown out, and does not go back to normal until the color property is edited and changed