So that issue has been discussed a lot already on this site.
Before creating a new post, always a good exercise to fully describe the issue and then search around using the involved terms as search terms and look at the latest results. After considering those, if you think your issue is completely unrelated, then feel free to post.
(Along those lines, I suggest for next time reading Getting good answers to your questions.)
Searching ‘markdown input’ on this site gives these recent results: