[QUOTE=;733684]
That is “supposed” to be handled by:
// Removed because it never gets called by the online subsystems
/*void UAdvancedFriendsGameInstance::OnSessionInviteReceivedMaster(const FUniqueNetId &InvitedPlayer, const FUniqueNetId &FriendInviting, const FOnlineSessionSearchResult& Session)
{
However the problem is that while it exists in the base subsystem, it is not implemented in the any actual subsystem. I could implement it myself but would have to add another override game instance in the steam module that inherits from the advanced friends game instance. Was really hoping that gap would be filled in engine eventually.
If you can do that, you would be filling that gap as big as death star. I don’t even know why nobody even complains about that 
I’m trying to do it myself too but having no documentation makes it so slow…