It's still alpha. One issue I found is that those knobs that can have negative values are stopped at '12 clock' position but you can still go below zero value. It's only the visual feedback of the knob that is wrong.
Pandora version of QXGedit was tested with Yamaha QY100 and it runs nicely along with Seq24.
Press Alt-F11 for fullscreen view to see the complete interface.