Problem with volta bracket going over to next line

[James Lowe]

Hello,

I did look through the tracker but nothing obvious. I have also tested this 
with 2.12.latest and get the same issue.

This is the snippet that is as small as I can seem to get it (from a piece I 
was engraving).

\relative c'' {
  \time 6/8
  \repeat volta 2 {
    c8 ees, c c' ees, c |
  }
  \alternative {
    { c ees ges g4 a16 bes | b4.~ b }
    { bes8 a g ges4 g16 a16 | d,4.~ d }
  }
  c'8 ees, c c' ees, c | 
  c'8 ees, c c' ees, c |
  c'8 ees, c c' ees, c |
}

\version "2.13.35"

What you can see is that the second volta stops at the end of the first line 
instead of carrying over to end at the next bar.

If you add two more duplicate bars at the end of the piece or remove one of 
them it all reflows and the volta is correct.

James