Snippet: Tie does not appear

[Ivan Kuznetsov]

Snippet: Tie does not appear


Why does the tie between the two low E naturals that I have 
indicated in the snippet below not appear in the notation? 

Thanks.


\version "2.12.3"
\include "english.ly"

\score {

<<
   \new Staff = "guitar"
   {
     \clef "treble_8"
     \time 4/4

     % guitar m01
     <<
     { s2.   g'8. [e,16~]  }
     \\
     {  r2. f8 [b8]      }
     >>

     % guitar m02
     <<
     {  <fs f' a'>4. <g' bf'>8  <g' b'>8 <bf a' cs''>4.   }
     \\
     {  s2   g'16 [gs16]   s4      }
     \\
     { e,1}
     >>
   }

>>

}

test_tie_01.png
Description: PNG image