Words and polyphonic parts

[Mark Chapman]

Hi,

I've only just started using Lilypond (2.4.5), and whilst it's very
impressive, I think I've found a bug. In the attached file swing_low.ly, the
sopranos divide within the staff at bars 13 and 29, and the basses in the
last bar (42). At all of these places (see swing_low.pdf), the text isn't
being attached. I've had to remove the soprano text ("Hum") to avoid putting
the following text out of alignment.

This isn't happening in the bass part in bars 10 and 26, where the notes
aren't tied or slurred, so I suspect this is part of the problem.

Regards,
Mark Chapman.