Ha, thank you, that's a great catch:). Yes, that's an Outreach Hub feeding itself through a Crew Junction, and I'm really glad you found it.
I made that on purpose. I got a lot of reports about loops going wrong around Outreach Hubs, so I made the hub work when its own output comes back into it through a junction or splitter. It's a placeholder for now. I'll keep improving it and may change how it works later, so it could behave differently in a future update.