Comment 5 for bug 1494034

Clicking on the maximize / minimize buttons need to be done twice or without any mouse movement at all during the first click.
When there's even the slightest mouse button movement when clicking on minimize/maximize it looks like it pushes in the button, but doesn't do anything until clicked on the button again.
Only if the mouse is kept perfectly still during clicking on minimize/maximize (not even one pixel of movement) they'll work the first time.