For CS-80V, there are three settings that affect sustain that are wrongly set for some presets, leading to think that sustain isn't working properly.
Those settings are located in the left bottom part, and are:
- Sustain Time yellow slider that is often set to a very short time
- Sust switch, merely placed in parallel with sustain pedal
- Sust Mode switch
This is not fancy stuff from Arturia, this have been modeled after the real CS-80.
For Jupiter-8V, the sustain pedal *does* work, but it could have been programmed out.
There are two light blue buttons on the UI labeled HOLD and LOW UP (for the lower and upper parts) that drive the sustain.
One or both of them has to be assigned to the sustain pedal in order for the sustain to work.
The supplied configuration "Analog Experience Keyboards" is configured properly for that matter: select it using the drop down menu next to MIDI LEARN in the toolbar.
Then the LED within the LOW/UP HOLD buttons should lit as soon as you press the sustain pedal.
About the Prophet, thank you for letting us know about this un-noticed problem to date.