barline grouping changed between 11.32 and 11.33

[Tapio Tuovila]

Hello,
I'm typesetting a goncerto grosso -sort of score. Tried to group
concertino and ripieni with 'system start delimiters'. Output is as
hoped with .32 but different (not as hoped) with .33 

Greetings,
Tapio

Here is a short example of input file and two .png files of output:

\version "2.10.0"
staffViolin = \new Staff  {  \time 2/4
        \relative c' {  d' r |d r \bar "|."
        }
}
staffViolinII = \new Staff  { 
        \relative c' { a' r|a r \bar "|."
        }
}
staffCello = \new Staff  {
        \clef bass
        \relative c' { d r |d r \bar "|."
        }
}
staffViolinIII = \new Staff  {
        \relative c' { f r |f r \bar "|."
        }
}
staffViolinIIII = \new Staff  {
        \relative c' { d r |d r \bar "|."
        }
}
staffCelloII = \new Staff  {
        \clef bass
        \relative c' { d r |d r \bar "|."
        }
}

\score { 
        <<
        \new StaffGroup <<
                \new GrandStaff<<
                        \staffViolin
                        \staffViolinII >>
                        \staffCello 
                        >>
                
        \new StaffGroup <<
                \new GrandStaff <<
                        \staffViolinIII
                        \staffViolinIIII >>
                        \staffCelloII 
                >>
        >>
}
\paper {
        ragged-right = ##t
}

barlines-32.png
Description: PNG image

barlines-33.png
Description: PNG image