Why Color Correction map does not work in Background Environment in Max 2018?

[sotomangel]

Hello.

If I want to work with HDRI loaded in my Viewport (Max 2018) everything is good if I put Physical Sky, Sun positioner (photometric light) in Environment-Background, but if I load a bitmap (HDRI) and connect color correct map (Arnold Map) to the Background and set that viewport show the environment map, the viewport put it black and does not change.

To fix that I have to put HDRI directly in the environment background but I can't connect the color correct and then connect it.

Why this happen?

Arnold Map only show in Activeshade and production? or is an error?

I have to use legacy color correction or Arnold maps in future will work perfectly?

Thanks.

[nicola.stefano.jannuzzo]

There is very little support for Arnold native nodes in the viewport.
The render works correctly though, right ?

[sotomangel]

In activeshade and production render I can see it, but in max viewport doesn't work.