A link such as:
https://medium.com/@clsmiley/transwomen-are-women-or-else-a996e4ac02c5
gets autoformatted as:
https://medium.com/@clsmiley/transwomen-are-women-or-else-a996e4ac02c5
and it doesn't work. Looks like something is trying to be clever and expanding the @
to what it thinks is a user account?
It's possible to workaround by using the 'insert link' option in the editor:
https://medium.com/@clsmiley/transwomen-are-women-or-else-a996e4ac02c5
but most people won't know that, and are more likely to think that Medium has censored yet another article.