Critical 1.021 bug with MIDI notes sustaining forever

I don’t have a MIDI loop in my setup, because local is off. However, here’s another video to show you the issue. In it, I use a totally separate controller from sound module, so MIDI echoing shouldn’t be a problem.

Here are the exact steps to reproduce this problem:

Physical connections:
MIDI Controller out (eg. Yamaha S90ES) -> Hermod midi in
Hermod midi out -> MIDI Sound Module in (eg. Yamaha MX61)

(You can also use one keyboard as Controller + Sound Module, as long as you have local echo disabled)

  1. Power cycle Hermod so it’s at default settings
  2. Set Track 1 Effect 2 to MIDI OUTPUT
  3. Play the Controller, you should hear the Sound Module
  4. Start Hermod Record mode
  5. Record a few chords in a loop
  6. Disable Hermod Record mode, but let it keep looping
  7. While the chords are playing, play a note on the Controller that overlaps one of the playing chord notes
  8. Hear that note sustain forever! (this is very bad)
  9. Stop Hermod
  10. Play more notes on the Controller, the note that was sustaining forever will continue to sustain forever when played, all other notes will sustain normally
  11. Power cycle the Sound Module. Once done, notes should sustain normally
  12. Start Hermod playing and repeat steps 7-12 until you want to throw Hermod out a window :frowning:

Can anyone else please confirm this problem? It seems like a really weird problem to have, and I want to make sure it isn’t just me!