In another post one of the staff said there was a known bug.
And no, each of my diffuse have separate height maps. I didn’t try alphablend, I don’t know how it works. Is it something like layerweight node?
This issue must be only with the layerblend node, because there is no problem at all with the layerweight.
It’s strange. Plus something I noticed is that when I change the preview weight in the layerblend node, the… i don’t recall how it’s called… in the console where errors apear, there is a number like X/16, which must be the amount of used layers. Well, when changing the preview weight sometimes that number goes up, sometimes it goes down. It a weird behavior, I can’t make any sense of it.