Problems with melismata

[Armin Lambacher]

Hello,

I tried the following code in Lilypong 2.9.10 to typeset some organ music 
(just a snippet):

----------------------
\version "2.9.10" 

\header 
{
        title = "Erde singe"
        composer = "Satz: Max Eham 1975"
}
#(set-default-paper-size "a4" 'landscape)
#(set-global-staff-size 20)

global = {
  \time 4/4
  \key f \major
}

text = \lyricmode {
        Er2 -- de4 sin -- ge,2 daß2 __ es4 klin -- ge,2
}

sopran = {
        f'4( a') c''
        d'' c'' s4
        f'4( g') a'
        bes'4 a' s4
}

alt = {
        c'4 f' f'
        f'8 g' a'4 \once \override Rest #'extra-offset = #'(0 . 2) r4 
        f'4 e' f'
        d'8 e' f'4 \once \override Rest #'extra-offset = #'(0 . 2) r4 
}

tenor = {
        a4 c' a
        bes4 c'4 s4
        c'2 c'4
        bes4 c'4 s4
}

bass = {
        f,4 f4. f8
        bes,4 f4  \once \override Rest #'extra-offset = #'(0 . 2) r4 
        a,4 c f
        g4 f \once \override Rest #'extra-offset = #'(0 . 2) r4 
}

\score {
  <<
  \new Lyrics = lyrics {s1}
  \new Staff = righthand
  <<
    \clef treble
    \global
    \new Voice = "one" {\voiceOne \sopran}
    \new Voice = "two" {\voiceTwo \alt}
  >>
  
  \new Staff  = lefthand
  <<
    \clef bass
    \global
    \new Voice = "three" {\voiceOne \tenor}
    \new Voice = "four" {\voiceTwo \bass}
  >>
  \context Lyrics = lyrics \lyricsto one \text
  >>
}

--------------------------------------------------

The problem is here, that I get no melisma on the "daß", second bar, 3rd and 
4th note. If I comment out the statement "\new Lyrics = lyrics {s1}" in the 
\score, I get the melisma, but the text is not above, but below the staves.

Unfortunately I do not have a webpage, where I coud post the output...

Now, I'd like to have the text above the staves AND the melisma. Did I do 
something wrong, or is this a bug? I tried to search the archive, but could 
not find a solution...

Best regards

Armin