In Logic and in Cubase/Nuendo you may want to turn off the fader motor on ta UF1/UF8 to stop the fader from bouncing up and down when scrolling through a lot of channels in your session.
Logic
Logic has an MCU feature that allows you to disable the fader.
You action it by pressing and holding the Ctrl MCU modifier (pre-mapped to soft key bank 5, button 1) and pressing the FLIP button. Do the same again to turn it back on.
information source - https://support.apple.com/en-gb/guide/logicpro-css/welcome/mac
Cubase/Nuendo
Cubase/Nuendo MCU allows it via the MOTORS function.
To disable the fader motors, press the MOTORS button.To re-enable the fader motors, press the MOTORS button again. The faders instantly move to reflect the current settings
UF8 Softkey bank 4, Key 1
UF1 Softkey bank 5, Key 3