Opaque doesn't work on MIDI

Hello, I just got Ardour 3 and seems that the Opaque features or regions doesn’t work with MIDI tracks. With an audio track I can correctly hear only the top region but with midi all the layers are played. Is this a bug or am I doing something wrong?


Typo, I meant “Opaque feature on regions”

There’s already a bug report about this issue at: http://tracker.ardour.org/view.php?id=5100.