The planet flux artifact is supposed to hide a colony from scans. However, it appears a planet is still 'visible' through a share, at least until the share expires. Is this a bug or expected behavior?

Cheers!

This is expected. A flux is only intended to remove it from the persons who originally scanned it. This is also a defensive counter. If you continue to share a planet, your legion may have a short window to claim the planet back if a flux is used after an invasion.

Also if you had someone you don't want to see the planet because your trying to take it and you feel that person may take it simply removing them from friends will keep them from seeing the planet any longer. (A guy did this to me when he shared his dyson planet with me)

So, let me know if this is correct:

1. I find a planet.
2. I share it with my legion.
3. Someone creates a colony and uses the planet flux.
4. I am the only person who can not 'see' the planet.

This does not seem right :/

Cheers!

Well after the 12 hours goes by the people you shared it with won't see it anymore I would guess. So the only person who would be able to see it perm would be the person who took it over.