At present TSE is receiving about 18 questions/day. In addition, many questions are posted in the frame for Answers. These may be downvoted and are regularly and expeditiously deleted.
It seems that, other than where the frame is used for Comments or clarification (eg by a new user who is also the OP but under a different account) the vast majority of those posting such 'answers' do not subsequently post their question as a Question. User names might confuse the issue but subject matter gives indication.
Perhaps the one-time users involved do not realise they may try again (in the right place) and simply give up because the print version of the problem they wanted solved has mysteriously disappeared.
I am aware that moves are afoot to revamp the entire user experience for posting Qs & As but rather than wait the usual "6-8 weeks" might something be achievable, say in my lifetime. It might be to all appearances quite simple, such as a sentence or so along the lines:
Be sure you are answering the Question. To ask one of your own click
A couple of recent examples of "the wrong box":
other than spam and other non-answers that are not questions.