It may take Medium some time to decide if they want to honor the tags. They may be filtering those manually - I think that because the one story I submitted this morning still isn't visible at https://medium.com/tag/mwc-death/latest and because I saw a story there that was tagged MWC Work.

Anyway, I was not going to enter because there is little I hate more than writing on demand-- and some other reasons. But this morning a story came out of my heart and I had to write it. When I was done, I realized I could submit it. I agonized over that, discussed it with my wife and finally added the tag and published.