Weird landscape bug

Development Rendering
1

Hi everyone :slight_smile:

I have a rather complex landscape material, and recntly started to experience a bug.

http://i.imgur.com/0YF90aom.jpg

As you can see some component have different colors for same layers and materials.

However, if I try to apply a small touch of a layer (screes) Igoes back to normal

http://i.imgur.com/nxnSeEZm.jpg

Any idea?

Thanks