cadenza puzzle

[bobr...@centrum.is]

Hello,

I don't understand what's going on here.  The output I get is in the attached 
PNG file.  I hope this is minimal enough.  It essentially reflects the 
structure of the file that is giving me trouble.  Why is the five measure rest 
"duplicating" like that?  In the actual project I'm working with, the cadenza 
passage goes across two systems and the multimeasure rest is duplicated twice 
before the "real" one is supposed to be displayed.

Thanks for any assistance,

David

*** BEGIN LILY-CODE ***

\version "2.24.2"

\pointAndClickOff

global = \relative {
  \time 4/4
  s1*8
  \bar "|."
}

cad = \relative c' {
  \cadenzaOn
  a8 b c f
  e gis es b
  g bes a es
  \cadenzaOff
}

tune = \relative c' {
  c4 d e f
  \cad
  \break
  R1*5
}

\score {
  \relative {
    \context Staff {
    \override MultiMeasureRest.expand-limit = #1
    \compressMMRests
    <<
      \global
      \tune
    >>
    }
  }
}

*** END LILY-CODE ***