@Ezb, yes it was the first test I performed. It doesn't change the result indeed.
@ admin I'm checking output messages using MD log. I assume it to be accurate.
@ all I tested it strongly and this is what I get...
I created three subknobs (MSB, LSB, PC) and one superknob, all having 128 ticks. The superknob doesn't send midi msg.
Then I tested this set rotating superknob...
If I rotate it using finger, sometimes (2 out of 10 times) I got midi message coming out in different order (PC, MSB,LSB for example instead of the expected MSB, LSB, PC). If I use momentary step buttons to control the superknob, the messages are ok (MSB, LSB, PC) all the time. So I can say with momentary buttons the subcontrol messages are synchronized. Instead if I use finger it is not synchronized all the time, so you can not rely on it. I checked it in many different situation and I think it is something to investigate on.