How to reproduce:
1. Open the user-submitted Project and open the "SampleScene" Scene
2. Enter play mode and press the left mouse button to toggle Shader Emission on
3. In the Hierarchy menu select the "Sphere" Object
4. In the Inspector menu expand the material component and observe that the Emission is unchecked
5. Observe the Sphere in the Scene view

Expected result: The Sphere Material Emission is toggled and is reflected correctly in the Inspector tab
Actual result: Toggling Emission using Shader Keywords does not update the Material correctly, expanding the component in the Inspector resets the value back to false

Reproduced in: 2018.2.0b1, 2018.1.0f1, 2017.4.1f1, 2017.2.2p3, 2017.1.3p3