Bug report: initial grace note causes redundant clefs and time signatures

[Fred Lunnon]

> I'm not top posting.

%{
Lilypad v2.12.2 running on Mac G4 Powerbook under OSX v3.9 

A grace note at the start of the first bar causes redundant 
and default clefs and time signatures to be printed, splitting 
the grace note from its companion note. 

A workaround is to prefix an initial rest bar. 
%}

\version "2.12.2" 

melody = \relative c { 
  \clef bass 
  \key d \minor 
  \time 6/8 
  %r2. % rest bar workaround 
  r8 a8 d e f e 
} 
lower = \relative c,, { 

  \clef bass 
  \key d \minor 
  \time 6/8 
  %r2. % rest bar workaround 
  \grace { f32[ g] } a2. 
} 


\score { 
  << 
    \new Voice = "mel" { \autoBeamOff \melody } 
    \new Staff = "low" { \lower } 
  >> 
}