Trouble with opsix native sustain pedal not working

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I posted a similar question in the wavestate forum. I'm having this same problem with both of these synths.

Regardless of whether I run opsix native in standalone mode or in Live, the sustain pedal does not function. I can even watch CC64 being sent using a midi monitor and it does not respond.

None of my other synths have this issue. If I route the same MIDI coming from my controller sustain pedal to any other synth, the sustain pedal works. Just not for opsix native.

If I run Pigments standalone, it works. Any hardware synth receiving CC64 from my controller works. All other softsynths work in Live. Just not these Korg synths. Not in standalone nor in my DAW.

Can anyone confirm this is an issue?