Text above repeat signs

[David Morawski]

> I'm not top posting.

Hello,

I'm having trouble putting text above repeat signs, specifically when the :| 
symbol precedes a linebreak. In the following example, the text ("3x") that 
should belong to the first :| gets pushed on top of the |: of the next volta 
repeat.

\version "2.14.2"
\score {
    \new DrumStaff {
        \time 3/4
        \repeat volta 3 { \drummode { \repeat unfold 24 bd4 } }\mark \markup 
{"3x"}
        \repeat volta 3 { \drummode { \repeat unfold 24 bd4 } }\mark \markup 
{"3x"}
    }
    \header {
        piece = "Prelude."
    }
}

Screenshot here: http://imagebin.org/308538