Left braces do not exist

[Paulo da Silva]

I'm trying 1.3.103.
The left brace of each line disappeared!
Instead, there are 2 horizontal dots!

Regards,
Paulo

\header {
        composer = "FOO";
        title = "BUG4";
        subtitle = "(BAR)";
%       arranger = "";
        enteredby = "Paulo da Silva";
        tagline = "";
}

%{
      Entered by Paulo da Silva, 2000
%}

\version "1.3.103";

papersize = "a4"
% \include "paper20.ly"
\include "paper16.ly"
\include "portuguese.ly"

global = \notes {
        \key fa \major;
        \time 2/4;
        \tempo 4=100;
}

LHInstr = "Piano ME"
RHInstr = "Piano MD"


RH = \notes \sequential {
        \context Voice \sequential {
                do'2
        }
     \bar "|.";
}

LH = \notes \sequential {
        \context Voice \sequential {
                do2
        }
     \bar "|.";
}

\score {
        \context PianoStaff <
         \context Staff = treble <
                \global
                \property Staff.instrument = \RHInstr
                \property Staff.instr = " "
                \property Grace.verticalDirection = #1
                \RH
         >
         \context Staff = bass <
                \global
                \clef "F";
                \property Staff.instrument = \LHInstr
                \property Staff.instr = " "
                \property Staff.noVoltaBraces = ##t
                \property Grace.verticalDirection = #1
                \LH
         >
        >
        \paper {        linewidth = 17.0\cm;
                        \translator  {
                                \OrchestralScoreContext
                                minVerticalAlign = 2.5*\staffheight;
                        }
                        \translator {
                                \StaffContext
                                \consists Instrument_name_engraver;
                        }
        }
        \midi { \tempo 4 = 100; }
}