4041 - If you will combine materials together through Layers node - you will not see mask

So if you will combine materials in Layers node - on output you will receive nothing (only visually - really it output mask as usual) - i dont know why. I’m obviously test it on 4032 build - and all works correctly. So i think it is issue of 4041 latest update

4041:

4032:

@Tomatiy Yes this is a new issue, layering materials work fine in the older stable build.