http://vwp5zrdfwmw4avcq.onion/ (trac) redirects to https://trac.torproject.org/

I'm trying to access torproject's trac via its onion address http://vwp5zrdfwmw4avcq.onion but accessing the onion address just redirects to https://trac.torproject.org/

is there a specific reason for this or can this be fixed to stay on .onion?

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