ofxgui non responsive

i wrote an app that stretches over 3 HD displays. I am using ofxGui, which sits at the far left near coordinated x=100, y = 100, which is an external screen.

i am noticing that i need to triple click, or hide and un-hide the gui to not make sliders and buttons respond to the mouse anymore. because of this it often happens that the wrong slider react to my dragging movements.

did someone else experience this too?