I've noticed very strange behavior from LilyPond. So what I do is:
1.create *.pdf from my *.ly file
2.copy this *.ly file to another directory
3.create *.pdf from my *.ly file in this new directory
It's hard to belive, but despite both *.ly files are exactly the same (they
are in different directories), the output in pdf is diferent! And the
difference applies to position of the dynamic mark. I have no idea why is
this happening