Broken glissando shape is wrong with changed Staffs

[Thomas Morley]

Opposed to the regtest glissando-broken-unkilled.ly the first part of
a broken glissandi does not anticipate the pitch on the next line, if
Staffs are changed.

\version "2.19.38"

\paper { line-width = 50 }

lower =
\relative c'' {
  \override Glissando #'breakable = ##t
  \override Glissando #'after-line-breaking = ##t
  d,,1\glissando
  \break
  \change Staff = "upper"
  f'''1
}

\new PianoStaff <<
  \new Staff = "upper" { s1*2 }
  \new Staff = "lower" { \clef bass \lower }
>>

Cheers,
  Harm

gliss-change-staff-bug.png
Description: PNG image