Staff doesn't extend to cover lyrics at line breaks

[Geoff Horton]

Try this:

\version "2.8.1"

\paper {
  ragged-right = ##t
}

music = \relative c'' {
  \time 2/4 g8 g8 g8 \bar "" \break g8
}

words = \lyricmode {
  La la "tra la la la la la la la la la I can't hear you la la la la la " la
}

\score {
  \context Staff <<
    \context Voice = one \music
    \context Lyrics \lyricsto one \words
    >>
}

================================

It's admittedly a forced example, but I ran across it in a real-life
example. Here's a slightly more complex version:

\version "2.8.1"

\paper {
  ragged-right = ##t
}

music = \relative c'' {
  \cadenzaOn
  c8 b a g f e d c c' b a
}

words = \lyricmode {
  La la la la la la la la
  "tra la la la la la la la la la I can't hear you la la la la la " la la
}

\score {
  \context Staff <<
    \context Voice = one \music
    \context Lyrics \lyricsto one \words
    >>
  \layout {
    \context {
      \Staff
      \remove "Time_signature_engraver"
      \remove "Bar_engraver"
    }
    \context {
      \Score
      barAlways = ##t
    }
  }
}

Geoff