align aftergraces

[Mark Stephen Mrotek]

Hello all,

 

In the following, the two aftergraces do not align.

 

Thank you.

 

Mark

 

\version "2.19.49"

\score {

  \new PianoStaff  <<

    \new Staff = "upper"

    \relative c'' {

    r2 \afterGrace 15/16 d\startTrillSpan {c16\stopTrillSpan (d)}

    }  

    \new Staff = "lower" 

    \relative c {

    \clef bass

    r2 r4 \afterGrace 15/16 f\trill {e16 (f)}

    }

      >>

}