barcheck fail when lyrics go across tied bar

[Arthur Lawrence]

> I'm not top posting.

%% words are correctly laid out but produce a barcheck failed message
%% from bar 11 of Elgar: Ecce Sacerdos Magnus

\version "2.11.2"
\paper { ragged-right = ##t }
\include "english.ly"

sop = \relative c' {
        \clef treble
        \time 4/4
        e'2-> b2->( | b4) b b cs ||
}

wds = \lyricmode {      ec -- ce | sa -- cer -- dos | }

\score {
        <<
                \new Voice = "s" { \sop }
                \new Lyrics \lyricsto "s" \wds
        >>
\layout { }
}