The Mix Weight of a Mix Shader seems to refer only on the principal UV set. I need to chose another one. Is it possible or I misunderstand something about MixShader?
Thank you!
Same problem here. 2 years after your question there isn't even a single answer acknowledging the problem/question...
I actually don't understand the question. What does mix weight have to do with UV sets.
The only solution I found is a non-elegant one. Just set the set (sorry) you need for the weight as Default UV Set. Now you can change the other texture references to any other set you need. The weight will refer to the default. I found this work-around a bit buggy sometime, so try more then one of needed. ✌️