Issue 1563 in lilypond: strange vertical line at staff begin using StaffSymbol #'staff-space

[lilypond]

Status: Accepted
Owner: ----
Labels: Type-Defect Priority-Low

New issue 1563 by brownian.box: strange vertical line at staff begin using  
StaffSymbol #'staff-space
http://code.google.com/p/lilypond/issues/detail?id=1563

Reported by Eluze,
http://lists.gnu.org/archive/html/bug-lilypond/2011-03/msg00194.html :

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the example in NR under 1.6.2 shows a strange vertical line at staff begin:

\new Staff \with {
  \override StaffSymbol #'staff-space = #1.5
}
{ a4 b c d }

thanks!
Eluze
%---------------8<----------------------

Please, see the whole thread!