Bug with cadenzaOn?

[Phil Holmes]

Not a big deal, and my apologies for raising possible bugs rather too 
frequently, but...

Run the following:

\version "2.8.0"
{
<<
\new Staff <<
\new Voice {
\clef "treble_8"
\time 4/4
r1  r1 |
R1*4/4  \bar "|." }
> >
\new Staff <<
\new Voice {
\clef "treble_8"
\time 4/4
\cadenzaOn  c'4 c'4 c'4 c'4 c'4 c'4 c'4 c'4 \cadenzaOff   |
R1*4/4  \bar "|."
}
> >
}

and the logfile includes:

CadenzaTestSmall.ly:9:8: warning: barcheck failed at: 2
r1  r1
       |

Reverse the order of the Staves:

\version "2.8.0"
{
\new Staff <<
\new Voice {
\clef "treble_8"
\time 4/4
\cadenzaOn  c'4 c'4 c'4 c'4 c'4 c'4 c'4 c'4 \cadenzaOff   |
R1*4/4  \bar "|."
}
> >
<<
\new Staff <<
\new Voice {
\clef "treble_8"
\time 4/4
r1  r1 |
R1*4/4  \bar "|." }
> >
}

and it runs clean.

--
Phil Holmes