All my materials that did not have “Separate Translucency” checked had that problem now. Where in the previous engine versions you could have it unticked and still displaying.
I’m having the same problem. It seems to happen when there are multiple emitters, each with different “Separate Translucency” setting in their material. Using only “separate” materials works fine but adding just one non-separate material causes them to be invisible. They are still there in “unlit” mode though.
Hey man, yeah I think the ones that have separate translucency basically cull the others that dont, the alpha and the entire texture. So they will be there but not show up. I just basically turned all of my fx materials to have separate translucency on.