Problem with the graduated filter mask

[maria graziab50418227]

I realized that using the graduated filter, the radial filter and the brush in Camera Raw the mask indicates exactly the opposite.
What happened? am I who inadvertently changed some parameter or is it a problem due to an update?

[Chuck Uebele]

So you're seeing the white mask area not taking the corrections, and the clear area is? 

[maria graziab50418227]

the mask is exactly the opposite.
the area to be corrected is empty and the surrounding area is masked