ChordNames change measure widths

[Malte Meyn]

Hi list,

the following code produces measures of different length: The measures 
containing a ChordName are narrower than the others. That’s a bug, isn’t it?

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\version "2.19.82"

<<
  \chords {
    s1*4 % try also s1*3 and see the line break move
    g1*3
    d1
  }
  \new Staff {
    \repeat unfold 16 d''16
    R1*8
  }
>>
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%