It appears that when the window of a vuo app is not selected it stops outputting midi data. Is this intentional, permanent, optional?
Exported Vuo compositions are supposed to continue running regardless of whether their window is focused. For example, you can connect
Fire Periodically to
Send MIDI Event, and it’ll output MIDI regardless of the focus.
Receive Leap Frames node has a bug where it only works when the window is focused. (See also the related bug report.)