Cursor disappears on Mac - ofxUI

Dear Forum,

If I compile this project on Windows, with Code::blocks, everything runs fine:

The settings panel is shown at startup, using ofxUI, and user can change app settings. On the other hand, on Mac, the panel is shown but not the mouse cursor; I need to hide and show again the panel using TAB key, so the mouse pointer is shown. Has anybody dealt with this kind of problema with ofxUI?

Thank you,
Andrei