Yes, this is just how fragments work; they're supposed to be stripped before sending the request to the server. This is exactly why, in the context of the thread, the fragment is the correct place to put the TSON hash parameter.

It is fine to have the fragment stripped before sending it to the server. What I meant was that client-side parsing of TSON in many languages will be hindered by the client-side libraries stripping the fragment far too early. Because you will need that fragment part for validation, but if your parse_url-function dismisses the fragment because nobody ever needs it...