did this change? (intentionally?)

In the timehonored tradition of asking my flist before spamming the yuletide comm, anyone know what's up with this? It's probably support request bait, either because its broken, or changed and no longer documented correctly, but a bunch of y'all do more AO3 challenges than I do, more recently than last yuletide.

On the AO3 FAQ page for collections and challenges it still says

Is this collection currently unrevealed? - If a collection is set to be unrevealed, all works added to it will be hidden until they are revealed.On the author's dashboard, the work will be shown as a 'Mystery Work' with a link to the collection. To reveal the works in the collection, the moderator can simply edit the collection and change this setting.

I remember in years past, this was the case, but this year I'm not seeing mystery works on the pages of people I know to have written something. I'm seeing my fic on my works page when logged in, but it disappears rather than turning into a mystery work when logged out. Hrm.

ETA: answered and explained in comments, yes an intentional change.

ETA part two: thanks, autocorrect, for changing flist to flustered. Although probably also accurate this week!