acciaccatura bug

[Eman Mohseni]

% acciaccatura bug
% if used in at the beginning
% moves timeSignature and more...

\new PianoStaff {
  <<
    \new Staff \relative c'' {
      \acciaccatura b16
      c4
}

    \new Staff \relative c {
      \clef "bass"
      g4
}
  >>
}