My track stack just lost all the controls except Mute, Solo (doesn't work), and Setting (and the only settings available are Legacy). What gives? I've never seen this before. I Quit, Restarted, same thing. Don't know when exactly it happened, I was bouncing-in-place a bunch of tracks in the stack but I didn't try to bip the Stack itself.
Logic 10.4.8
Mac OSX 10.13.6