(observed with MATLAB 2016b, on MAC OS)
I have a script that produces a GUI. Until last week I have not ever seen this problem, but now it happens every time I run the GUI.
To interact with the GUI I have to place the mouse cursor just a few centimeters above the point I'm supposed to click. If I move the window, the problem disappears => the mouse cursor corresponds to what I should click.
This happens with an attached screen to the laptop, but also just with the laptop.
While I can come around by moving the window, this is highly frustrating.