Lyrics line not positioned correctly for vertical alignments other than baseline

Ubuntu 14.04, GIT commit: d9e3e93

1) score with lyrics that include hyphens and/or extenders
2) change lyrics text style use top aligment rather than baseline

Result: lyrics move, but lines don't. This applies equally well to existing lines as well as lines for lyrics added later.

I don't consider this super high priority; it could just be documented limitation. On the other hand, it's probably not too hard to fix, either.