Overlay Post Processing Issue

[Pachinko0]

I have noticed that my Post Processing does work with the Mirror script,
however if the Stack has any Overlay Cameras the Mirror script makes Post Processing stop rendering.

If i disable the Mirror script PostProcessing renders.

I have 1 base camera and 2 Overlay cameras for UI.

No matter what settings i set on the Base Camera or the others, while Mirror script is enabled no Post Processing shows if an Overlay camera is active and rendering.