LightInfluence not used w/ AlwaysOnTop?

So I’m currently using a SurfaceGui to make a 2D panel of a train cab with LightInfluence on 2, but I’ve noticed that decals with transparency >0 will start clipping through the cab at certain angles. I enabled AlwaysOnTop to prevent this but I noticed that the SurfaceGui doesn’t get affected by the LightInfluence once enabled…

Is this expected behaviour?


I am not sure what I am supposed to be looking at in the example images.

My bad, should’ve clarified:
The Window image at the bottom