It worked in Boost, but on Lemmy UI it doesn't linkify the whole thing

You would think markdown would work, but no, these somehow have the same issue:
https://piefed.social/c/lemmy@lemmy.ml/p/1384152/piefed-finally-fixes-lemmys-ugly-post-urls
https://piefed.social/c/lemmy@lemmy.ml/p/1384152/piefed-finally-fixes-lemmys-ugly-post-urls