Flashing green is bad, they should all also be breathing cyan like the Argon is but they are not working like they should.
The Xenons are supposed to have access to the Particle cloud so you can have them Particle publish and do other cloud based features without having to rely on the Argon code to do this work.
The Xenons are communicating via the local Mesh network and this is why they still have access to the Argon which does have Particle cloud access which allows you to get data out to the web. Your supposed to be able to have cloud functions available directly from the Xenons when the Argon or Boron is in a breathing cyan state which means they have Particle cloud access.
So even though you have Mesh communication working , if you keep an eye on it you will see they come and go back online randomly and sometimes do not comeback online without a manual reset. Sometimes I see them doing the Red SOS crash flashing and then they recover back to flashing green.
If you cut the Argon WiFi Access on my unit and then give it WiFi access again the Argon will start breathing Cyan again but it will not publish anything to the Particle cloud unless you manually reset it.
You can chime in on this thread with you testing feedback. We are all going to provide real world experience feedback and work together to push this all forward to something more stable.