so you're not using Aux Sens after all... my confusion.
now I see what mean, I guess and no buses strips get highlighted in the Mixer whatsoever and that's a permanent fact :) Mixer bus strips were never highlighted (and probably never will, sorry again:)) so you seem to have it all working as designed! (long ago;))
however, if you wish to check onto what exactly are your tracks connected, you can look into the menu Track > Inputs or Outputs: it oppens the Connections window to the respective (input or output) bus to where the track is connected from or to externally.
so you're not using Aux Sens after all... my confusion.
now I see what mean, I guess and no buses strips get highlighted in the Mixer whatsoever and that's a permanent fact :) Mixer bus strips were never highlighted (and probably never will, sorry again:)) so you seem to have it all working as designed! (long ago;))
however, if you wish to check onto what exactly are your tracks connected, you can look into the menu Track > Inputs or Outputs: it oppens the Connections window to the respective (input or output) bus to where the track is connected from or to externally.
hth.
cheers