Daniel,
I use a Behriner U-Control UMX49 MIDI Keyboard for note input. It is connected via USB directly to my iMac.
I’ve sent you an email on wednesday with some diagnostic files and a Dorico file attached.
I tried Snoize MIDI Monitor and it seems that my MIDI keyboard continously sends MIDI data. See the attached and zipped Snoize file.
Thomas
MIDI data.mmon.zip (6.48 KB)