Parse User log out does not work

I am using Parse 1.9.0 for Android and I need to log out user on button click, so I call:

ParseUser.logOut();

After that I need to open login screen and click on Facebook login button, and to check if user have saved custom custom field.

But, it seems that ParseUser.getCurrentUser() after log out is not null.

How I can remove current user from cache?