The Keys I have on my unit is sending dual action. It triggers when I hit the key and re-trigger the same note when I release the key. I did a test with the Prologue USB midi disconnected from the unit and it plays normal, without re-triggering note. It seems to be midi feedback that is the culprit.
This does not happen when I play via an external midi keyboard.
I tried updating the firmware, factory reset. It didn't change anything.

Anyone out there having the same issue or have found a fix.
Cheers