partial in the middle of piece

[Karol Majewski]

The following gives warning:

warning: barcheck failed at: 3/4

http://lilypond.1069038.n5.nabble.com/Partial-measures-in-middle-of-score-td154007.html
https://code.google.com/p/lilypond/issues/detail?id=3645

Is this is related to 3645?


\version "2.19.7"

upper = {
  \time 4/4
  \partial 4 c'4 c'1
  c'1
  \partial 4 c'4 c'1
  c'1
}

lower = {
  \time 4/4
  \partial 4 r4 R1
  R1
  \partial 4 r4 R1
  R1
}

\score {
  \new PianoStaff <<
    \new Staff = "upper" \upper
    \new Staff = "lower" \lower
  >>
}

--Karol