Note to Loudness Problem

If the loudness of an oscillator is higher than 0, let’s say 40, and I assign note to loudness with an amount of 50, then low notes as well as high notes are getting louder.
I don’t hear any effect in this case.
If I set osc loudnes to 0 and increase note to loudness to 80 than lower notes are lower in loudnes and higher are louder. That’s what I would also expect when the loudness of an osc is increased.( maybe 40, 50, …etc.)

Is this now a bug or intended ?