thanks for the correction. However, in 4.0.1 I still see "Juce" as MIDI port name:

4.0.1:
markus@markus-laptop:~$ pmidi -l
Port     Client name                       Port name
14:0     Midi Through                      Midi Through Port-0
131:0     Pianoteq Midi Input               Juce Midi In Port

3.6.6:
markus@markus-laptop:~$ pmidi -l
Port     Client name                       Port name
14:0     Midi Through                      Midi Through Port-0
131:0     Pianoteq Midi Input               Pianoteq Midi In Port

Sorry, I do not like it to be pedantic. But perhaps you want to see "Pianoteq" in the MIDI port name as well.

Just for information: I have Python script running in the background. It waits for controller events from the buttons and the knob on my NI Audio Kontrol 1. And if Pianoteq is opened, the script sends MIDI program change events to Pianoteq. The script scans the available port names here, of course.

This is a detail we overlooked, it is fixed in the 4.0.1 update released yesterday.

This name appears in qjackctl or when I perform 'pmidi -l' (Linux 64 bit).