\partcombine, trill spanner and acciaccatura

[Urs Liska]

Hi all,

I'm experiencing an issue with \partcombine.

Consider the attached snippet and image.
When there is an acciaccatura in one of the voices the trill spanner 
doesn't stop in the \partcombine-d voice.

It doesn't matter in which voice the acciaccatura is. \appoggiatura has 
the same effect while \grace works well.

Is there anything wrong with the code or is this a bug?

Any ideas?

Urs

acciaccatura-partcombine.ly
Description: Text Data

acciaccatura-partcombine.png
Description: PNG image