I’m sorry but I cannot do more tests because I rolled back (Nuendo).
With Faderport, I toggle the shift key and then the fader should get the value of the knob under mouse. With 13.0.50 the fader sometimes reads the value under mouse, sometimes not.
Edit:
I reinstalled 13.0.50 and recorded what is happening.
With 13.0.41 when I move the mouse over any knob the fader gets the value and I can set it.
With 13.0.50 the fader do not get the value of the knob but I can set it, but starting from a wrong value.