Unity 6000.0.23f1 problem with sampling enviroment reflections

So, I’m trying to get enviroment reflections in Unity 6000.0.23. I was trying to sample unity_SpecCube0 as always (I’ve checked it works for unity 2021), but it returns black color and nothing more, any ideas on how to get environment reflection samples properly? Same goes for unity’s brdfs :frowning:
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btw, also will mention shadergraphs node “Ambient” also returns here balck color for any value.

Have you found a solution yet? I’m facing the same problem.