Source : Free On-Line Dictionary of Computing

That's not a bug, that's a feature!
     
        The {canonical} first parry in a debate about a purported
        {bug}.  The complainant, if unconvinced, is likely to retort
        that the bug is then at best a {misfeature}.
     
        See also {feature}.
     
        [{Jargon File}]
     
        (1995-02-02)