Add one instrument track, for example HALion Sonic SE
Open MixConsole and click “Racks” button, then click on “Track Quick Controls” - so it is checked. Now you see QUICK rack bellow all other racks. Edit Track Quick controls as you wish. (example : S1 Mute, S1 Solo, S1 Volume) Check if it works.
In project window click right-mouse button on newly added track of HSSE and select Disable Track.
Re-enable the track. Although the Track Quick controls say S1 Mute, S1 Solo, S1 Volume as previously assigned, they now control default controls read from the plugin (S1 QC1, S1 QC2, S1 QC3)
NOTE: Even when you save the instrument track with assigned QC controls as Track preset, the situation is the same : The names get loaded, but they still control the default controls, not what you assigned.
This is still not fixed in 10.0.40. Looks like it can be fixed easily as saving QC preset and re-loading it after the disable/enable cycle loads proper values. Pretty please Steinberg!
Still not fixed in Cubase 10.5…
Please Steinberg, this is getting ridiculous. This bug has been there since years and makes Quick Controls completely unusuable in deactivated templates.