Illustrator adds paths to brush strokes - Help!
Hello everybody,
I encountered a weird little problem while working with the brush-tool (B).
As far as I´ve read this problem is quite known when using the calligraphy-brush tool, which, to be honest, does not help me too much.
What happens?
If I paint / draw a curve with my tablet (Wacom), Illustrator fills the curve, but not with a "controllable path" that I could remove. It is just there, but in outline view it does not show:

I can't get behind why he does that fillings in the corners.
Can somebody help?
If you need further Info, let me know.
Thanks a lot in advance!
Jan