This has absolutely demolished me, I've started writing an answer beforebefore midnight and submitted it after midnight. Either accidentally selected (oror was automatically opted in?), as I managed to guess after a decent lag - "top secret" filter after submitting my answer. I though it was left scratching my head for a bug at first.while
I couldn't figure out what's wrong with markdown and how my answer did end up looking so strange. A moment later I disabled hethe filter, but, what's even more hilarious, it was only after running into that post, when I realized that the filter is an April fool joke (yeah, I should sleep a little bit more).