[BUG] MIDI Note-Offs disregard track input ch. setting

Summary
MIDI Note-Off messages received from an external MIDI port end notes on all MIDI tracks, regardless of the tracks' input channel settings.

Steps to reproduce (What I did)

Tested on: MPC One, firmware V2.10.0

** MIDI Track 1
- Input Port: MPC
- Input Channel: 1

** MIDI Track 2
- Input Port: MPC
- Input Channel: 2

** Play the following sequence of MIDI events into the MPC's MIDI input:
- (1) : Channel 1, Note-On, C-2, velocity 70
- (2) : Channel 2, Note-On, C-2, velocity 70
- (3) : Channel 2, Note-Off, C-2
- (4) : Channel 1, Note-Off, C-2

Actual result (What happened)
At position (3), BOTH Track 1's and Track 2's note C-2 ended simultaneously.

Expected result (What SHOULD HAVE happened)
At position (3), Track 2's note C-2 ends, and Track 1's note keeps playing.
At position (4), Track 1's note C-2 ends.


It seems that the track's input channel settings do not affect Note-Off messages, which is a bug.

Related links: viewtopic.php?p=1833058#p1833058

Yeah, unfortunately it seems this bug has been present since a few firmware versions.

I haven't fully tested with the hardware yet but can confirm that it is still happening with the VST plugin in 2.10. It doesn't seem to affect tracks that are sequenced *inside* the MPC but still it is a shame because it's preventing the MPC from being fully multi-timbral with external controllers/sequencers.

See this other thread:

https://www.mpc-forums.com/viewtopic.php?f=48&t=210361