Unable to invite Xbox players from bungie.net is STILL an issue
'You cannot invite players to your fireteam unless you are playing Destiny 2 and are in Orbit with open Fireteam slots. If you meet these requirements yet are seeing this error, check to make sure that you have not set your profile to an "Appear Offline" state.'
This is the same error message that was being looked into pre-Season of the Drifter. It's still not fixed and is making fireteams difficult