possible bad output in mensural-ligatures.ly

[Janek Warchoł]

Hi,

i've noticed something strange in mensural-ligatures.ly: in the last
system, a flat symbol collides with the notes (attached).  Should it
look like this?
I tried to determine when it was introduced, but i cannot open eps
files in Lilydev so all regtest archives from
http://lilypond.org/download/binaries/test-output/ are useless for
me...

cheers,
Janek

flat and ligature collision.png
Description: PNG image