Describe your issue:
I have connected fx unit via midi to the QC. In case I have switched MIDI THROUGH off in the QC, a program change does work perfectly. In case I switch the MIDI THROUGH ON, it doesn’t work anymore.
Steps to reproduce your issue:
set midi through on and sent midi pc to external unit. You will see it will work.
Similar issue here, turning on midi through seems to simply connect the in and out together and disable onboard midi messages. I emailed support last week but haven’t heard back yet.