Issue 1257 has come back?

[Jonas Müthing]

Hello dear Lilypond-developers

When typing the following code the span bar at the line break  
disappears:

\score {
  \new PianoStaff <<
    \new Staff {
      b'1 b'
      \stopStaff
      \break
      \startStaff
      b' b'
    }
    \new Staff {
      b'1 b'
      \break
      b' b'
    }
  >>
  \layout {
    indent = #0
    line-width = #50
  }
}
This was reported as issue 1257 in september 2010  for version 2.13.32  
and then confirmed as fixed in 2.13.48/49. I tried the same sample in  
2.16.0 and 2.17.3 and the problem is back again, no span bar at \break.
P.s.: Could you please keep me in CC with this issue as I am not on  
the bug-list?
Thank you,
Jonas

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