I thought the latest patch added "friends online status cross platform" even gog galaxy 2.0 twitter account said it is implemented. But I can't see any steam friends and I have connected steam. So is it implemented or not?

Edit: Never mind, solved it. You need gog 2.0 to take up the hole screen for it to show up.

It only shows up in the right sidebar if the Galaxy-Window is at least 1501 pixels wide!

But another thing about this friends online status: Am I also shown online to my friends? And if so, how do I go online/offline in Steam, Origin, uPlay, etc. through Galaxy 2.0? I only found the option to go online/offline for GOG itself.

I don't think there is an option to switch online status yet (as requested here https://www.gog.com/forum/general_beta_gog_galaxy_2.0/feature_request_friendlist_statusappear_offline_or_respect_online_status_of_integrated_launchers
At the moment Galaxy doesn't respect the online status set in the other launchers either.