no flags replace broken beam

[Thomas Willhalm]

Hello,

thank you for providing such a great tool as lilypond for free. The 
following behaviour in lilypond 1.6.7 is probably not intentional. If a 
line break is forced between two notes that are connected by a automatically 
generated beam, no flags replace the beam. Here is an example:

melodie = \notes \relative c'' {
 \partial 2 r8 g g e | g4 g e8()c4. | r8 g' g a g \breathe  \bar "empty"
\break
 g g e | f4 f d8()b4. | r8 g' g a g \breathe \bar "empty" \break
 g g e | g4 g e8()c4. | r8 g' g a g \breathe \bar "empty" \break
 g g e | g g g g f d4. | c4 r
 \bar "|."
}
\score {
  \context Staff \melodie
  \paper { }
}

Workaround:
Use
 \property Staff.autoBeaming = ##f
and set all beams by hand.

Best regards
Thomas