Posting this under Bravo Company because I know this works for PS4 but not sure about XB1 but...
For the people that have downloaded the PS4 app on their phone, with the app, it will always show you as being online. I know we're supposed to join games when we get invited but I think a good rule of thumb for this would help to be if the person isn't on the game, maybe send a message before inviting?
I know on Netflix there's a few times it hasn't showed up, just shows the person as on.
I mean, I know we're supposed to join when we are invited unless we have a good excuse but I've had people invite me when I was at work because my app is on my phone and I don't always have the best service at work so I can't respond right away and I just don't want to piss someone off.
So, a good rule of thumb, at least for PS4 should just be if they aren't on the game, send a message before invite?
Just putting this thought out there.