When using a Macro for a button, I got strange behavior that when pressed, my command was executed but also the volume for the track fader would jump to max level for one, and on another Macro the Pan jumped all the way to the right.
I know my Cubase macro was correct as I used it as a hot key with no issues. There was only one command for the button, the particular Macro.
Macro seems to have some extra data it transmits that is causing the volume fader for the track to jump to max level.