I Never Join Post Game Lobbies Anymore. Are They Gone?

I just got out of a game that my lane partner played amazing on and I wanted to ask him if we wanted to go again together and there is no post game lobby.

I see this.. https://www.reddit.com/r/DotA2/comments/16zgc3n/post_game_chat_has_gone/

Is this an on going issue or is this user error? Have I potentially done something, or been doing something, to not join the post game lobby? Both behavior scores (new to me, returning player) are around 10k.

If this is a test by valve on a slice of the population this really sucks, I have no friends on dota anymore and it would be awesome to link up with people who have the same mind and play well. But with out a post lobby I dont see how it can happen since you cant DM people you arent friends with on steam anymore.