Right now, there's a bit of an issue going on with Twitch and the PlayStation 4's horror-movie-director simulator, Until Dawn. Yesterday the Twitch Support Twitter account posted that if you were using PS4's built-in Twitch sharing functionality that Sony had disabled archiving. Based on the response we got from Sony, it doesn't seem like it was for a nefarious reason or anything, mostly just forgetting to flip a switch.
Using PS4 Share to broadcast "Until Dawn"? The publisher has disabled archiving for this game. We're reaching out to hopefully enable. ^JM— Twitch Support (@TwitchSupport) August 26, 2015
We are currently working on a fix that will enable archiving of Until Dawn Twitch streams as this feature was unintentionally disabled. We are humbled by the community reception of the game and are excited to see fans sharing experiences on Twitch and YouTube. We apologize for the inconvenience and will provide an update as soon as the issue has been resolved.
So there you have it, folks: just be patient. In the meantime you could always watch our archived stream just below.