As you can see from the attached animated gif, Nuendo 6.0.6 misses phase button in Pre Section: the phase command works anyway but you have to push “blinded” in the area nearby where the button supposed to be; blue indicator led lights on, and to confirm that, you can switch between the knob view and the parametric one: the parametric still has phase 180 on/off.
Same in C7.06.
A “phantom” phase button.
Same here on N6.0.6
Same here on N6.0.6