I found some old threads about this but with the change from VST Quick Controls and Track Quick Controls to Focus Quick Controls, I thought best to make a fresh topic.
Firstly, the “Quick Controls on/off” button in the Quick Controls tab of the Inspector (what we traditionally call Track Quick Controls) still doesn’t seem to actually do anything. To the right side of the Quick Controls tab in the inspector is a blue “knob” symbol that says (when you hover) “Indicates if Track Quick Controls are Active” is always blue. This can be confused with assuming that those parameters “have the focus” of the “focus Quick Controls”. So, if you have a MIDI remote mapped to the “focus quick controls” you might think it will control these.
These controls get the “focus” when the project window is the active window (unless you have your “Quick Control Focus Setup” set to “Track Focus Only”.
Another confusing thing is that in the instrument rack on the right pane, each instrument has the little knob in the lower right corner which, when hovered, say “Set Remote Control Focus for VST Quick Controls”. This DOES NOT set the Focus for the new “Focus Quick Controls”. I did not set up the “Legacy” VST Quick Controls Device to test if it works for that but, maybe it still does….
I THINK what I have figured out is that, If a plugin window is open and active, the plugin Quick Controls have the focus unless “Track Focus Only” is selected in setup. If the project window is the active window, the selected Track Quick Controls have the focus unless “Plugin Window Focus Only” is selected in Setup. In the upper right corner of the plugin window is a “QC” and a “Lock” symbol and a box which, if blue, indicates Focus for the Focus Quick Controls. You can lock the focus to that plugin so even if you go back to the project window or open another plugin, the Focus for Focus Quick Controls remains with the locked plugin. You can also lock the focus to a specific tracks Track Quick Controls so if you select another track or plugin window the focus remains. The only place I can see to lock the focus to a track is in the header portion of the MIDI Remote lower pane.
One other thing to keep in mind is that the Track Quick Controls and Plugin Quick Controls can be the same (i.e. mapped to the same parameters) or different. If they are the same, then controlling one controls the other also.
I imagine this will get cleaned up in the future when they start removing the “Legacy” Quick Controls concepts.