Hara kiri another bug

[Rune Zedeler]

When the lower staff hara kiris, the crossing bar line disappears. :-(
Please help. Fix ONE of the two bugs so that I can typeset my piece of
music.


\version "1.5.12"
\score { \notes \transpose c'''
 \context PianoStaff <
   \context Staff = up { c2 c c c \break c c c c \break c c c c }
   \context Staff = down { c2 c c c \break c c c c \break c c c c }
   \context Staff = mid { c2 c c c \break s1 s \break c2 c c c }
 >
 \paper {
  \translator {
   \HaraKiriStaffContext
  }
 }
}