Incorrect lighting in HMD when using linear color space in Unity 2017.3.1f1

Unity 2017.3 seems to require Gamma Color Space when building for Windows Mixed Reality headsets, our project is coming from Unity 2017.2.x and we have been using Linear Color Space. When we use what we have done with Linear Color Space the scene is very dark.

Is there a way or trick to using Linear Color Space using 2017.3 and building for Windows Mixed Reality??