Window focus affects data transmission

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.

But the Receive Leap Frames node has a bug where it only works when the window is focused. (See also the related bug report.)