Well, looks like they finally figured it out - but it's a hacky fix, they're still not using a proper URL parser. Here are some of the ways you can trick badly implemented URL parsers (haven't tested all of them on twitter specifically, but at least a couple do indeed work):

   authority:   https://user:pass@host/[..]
   anchors:     https://[...]/path#anchor
   path params: https://host/path;param/[...]`
   port:        http://host:80/[...]`

I'm quite sure they're reading this thread. Fully expecting you to post again in 20 minutes haha.

I'm sure Uncle Musk is scrolling through this thread yelling at his people asking "Why aren't we doing this!? Can we do this?"