instrument name misalignment

[liang seng]

Hi, I would like to report a bug regarding instrument names when using 
Lilypond 2.7.36 for Windows XP. In the pdf file, the instrument names are 
not vertically aligned even though both use the center-align command in 
markup for instrument names. This is despite I left the second line blank 
for the first instrument name. Is this a critical bug?

\version "2.7.29"

\score {
\relative
<<
\new StaffGroup <<
\new Staff << { \set Staff.instrument =\markup {
      \center-align { "2 Oboi"
                \line { "" } } }   R1 } >>
\new Staff << { \set Staff.instrument =\markup {
      \center-align { "2 Corni"
                \line { "in B" \smaller \flat  "alto"  } } } R1 } >> >>

>>


}

score1.pdf
Description: Adobe PDF document