Friend Invite problems

Problems with the friend invite feature (update - it's fixed!)

Many thanks to those of you who have reported that inviting friends to matchmaking/lobbies is not working. After investigating, it looks like this is an ongoing Steam problem and we are not the only game suffering from it. We have reached out to Valve for information, but do not have a timeframe on a solution.

Update 24 May: Valve have fixed the problem and this feature is now working again. Thanks for your patience.