5.5 AND 5.6 Cant invite friend

[Demonith]

When i want to invite friend to join my lobby i get
LogOnlineSession: Warning: STEAM: Missing or invalid session GameSession for invite request

i have tried 5.5 and 5.6 version of unreal and Advance Session same problem

[mordentral]

they screwed up sessions again, might need to wait for hotfix 1