markup makes bar number move

[Marc Mouries]

Hi Lilyponders,

When i add text markup to indicate fingering this makes the bar number move. 
Is there any way to keep the bar number closer to the staff and always at the 
same place?

%% fingering markup makes bar number move
\version "2.12.2"
\include "english.ly"
melody = \relative g' {
   g16 [ c (bs  c d  f, )] 
   c16^\markup {\center-align \finger {\char##x2012 1}} [ f' (e  f g  bs, )]
}
\score {
   \new Staff {
                \override Score.BarNumber #'break-visibility = #all-visible
                \override Score.BarNumber #'font-size = #-4
                \override Score.BarNumber #'self-alignment-X = #CENTER
                \set Score.currentBarNumber = #50
            \time 3/8
        \melody
    }
}

bug_bar number moving.ly
Description: Text Data

cheers,

-Marc