Material Instance Editor Bug: Vector Parameter Channel Names not showing up in Layer Parameters panel

Material Layers do not properly display parameter custom names in the same way that regular materials do. 

[Link Removed]

1. Create a new material layer with at least one parameter
2. Select the parameter and set custom channel names using the Paramaters Customisation > Channel Names section of the Details tab.
3. Add the Material Layer to a material stack, the instanced parameters ignores the custom names.