OK, doing more testing with the exact same setup in N14, the failure for Cubase 15 to properly parse NRPN data seems to be consistent. Midi Monitor shows the exact same data with the exact same configuration between the two - the only difference is that in CB15 Pro, the “first touch” of a parameter from the hardware (my OBX8 filter cutoff was used in testing) results in a very brief (~200ms) message flashing on Omnisphere 3 indicating it saw the initial attempt to set the parameter, but then it ignores everything, even though Midi Monitor shows the same data stream that N14 does.
Hazarding a guess, the most prevalent change I see in CB15 is:
Control Change Support Extensions
- Cubase now supports the easier to use registered (RPN) & assignable (NRPN) controllers from the MIDI 2.0 protocol.
Given previously reported fixes for this in 13.0.40, my guess is some manner of bug regression and/or mangling of NRPN from MIDI 2.0 integration.
@grayedout Andy, do you mind just tagging your OP as issue and cubase-15 so we don’t have to create a new thread? I think the history of this thread would be valuable if this is in fact some kind of bug and not something we’re supposed to work-around differently in CB15.