This support ticket, which is linked to from the ticket you linked to, appears to say that the reasoning is related to semantics of security related to the secu

This support ticket, which is linked to from the ticket you linked to, appears to say that the reasoning is related to semantics of security related to the security slider: https://trac.torproject.org/projects/tor/ticket/17898 https://trac.torproject.org/projects/tor/ticket/17898