I'm not sure what you're trying to do here … but, given what's happening, it sounds a lot more like you have something misconfigured —either HW or loopMidi. And in the end there's a virtual connection from something back to Ch1.
Disclaimer: I don't know a thing about loopMidi. But from a cursory look at loopMidi, your issue sounds more like a configuration problem than a bug in HW.