Bug in A Woman's Lot

When Bianca is going to Matthias to ask him whether he wants to dance with her, Matthias voice is very very quiet. First I thought his voice is completely missing, but then I noticed it’s there but extremely silent when you turn up the volume. I don’t know whether it’s a general bug or just in the german voice acting.
I’m playing with version 1.9.3

Is there any big patch in the works?

It was fine in English.

Then it’s a german voice bug.