What happens with figure callbacks when I am zooming axes?

Hi, I have been developing quite simple GUI (main figure has one axes on it & couple buttons) in Matlab.

I have implemented the following callbacks:

WindowButtonDownFcn, WindowbuttonUpFcn, WindowButtonMotionFcn

for my main figure. I use them to move and resize previously drawn rectangles on the image. It works fine until I zoom in the axes, the callbacks stop working...

Does anyone why any idea why this might be happening?

Thanks!