Lyrics to second voice messes up following measure

[Philipp Legrum]

Hello fellow LilyPonders,

yesterday I stumbled over a problem involving lyrics assigned to a (cue) 
voice in a bivocal measure.
Assigning a syllable to the *last note* of the bivocal measure messes up 
the subsequent monovocal measure (and all subsequent ones).

Since I am a lilypond beginner, it's likely I am missing the obvious 
here. Lilyponds behaviour, however, seems illogical to me and cumbersome 
to work around.

I boiled down the behaviour to an attached 10-line example:
Add another syllable to the lyrics (line 6) and watch the note in the 
following measure disappear.

Can somebody help me out here?
Thanks a lot in advance,
Phil

Cue.ly
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