Grace note and rehearsal marks

[Dieter Grollmann]

Hello,

I'm not sure, is this a bug or have I missed something in the
documentation:

Rehearsal marks get confused when a grace note follows immediately
in the next bar, but only if there is more than one staff (same
problem with \acciaccatura and \appoggiatura).

See attached example.

Dieter

mark-grace.ly
Description: Text document

mark-grace.png
Description: PNG image