Subdivide beam bug 2.15.33?

[Nick Payne]

I would expect that all four beams should be subdivided, but only the 
second beam in the bar is being subdivided:

\version "2.15.33"

\relative c' {
    \set tupletSpannerDuration = #(ly:make-moment 1 4)
    \set baseMoment = #(ly:make-moment 1 8) \set subdivideBeams = ##t
    \times 4/6 { \repeat unfold 24 { c16 } } |
}

test.png
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