Issue 1569 in lilypond: 2.13.54 breaks NoteNames vertical spacing

[lilypond]

Status: Accepted
Owner: ----
Labels: Type-Defect Priority-Critical

New issue 1569 by address@hidden: 2.13.54 breaks NoteNames vertical  
spacing
http://code.google.com/p/lilypond/issues/detail?id=1569

Reported by Michael Ellis in  
http://article.gmane.org/gmane.comp.gnu.lilypond.general/63005/match=notenames

In 2.12,  the NoteNames output lays close beneath the lyric line.  In
2.13.54 the gap is quite large and the output collides with markup
above the next staff.

\version "2.13.54"

notes = \relative c {
  \repeat unfold 40 { c'4 c c c }
}

mylyrics = \repeat unfold 40 \lyricmode { \tempo "Allegro" ly -- ric ly --  
ric }

\score {
    <<
    \new Voice = "voice" { \notes }
    \new Lyrics \lyricsto "voice" { \mylyrics }
    \context NoteNames \notes
    >>
}

There are workarounds discussed in the thread, but this seems like a  
regression, and so the Critical rating.

Attachments:
        notenamesexample.png  57.3 KB