when i tap the power button on my MBP to bring up the shutdown/restart window, the shutdown button is always in focus. if i hit tab on the keyboard, the focus doesnt leave the shutdown key. how do you cycle between controls on a form using macOSX?
The Enter key always selects the default action. That is the button that is blue or gray. To activate the button you've selected with the tab key, hit the space bar. The selected element has a more subtle effect outlining the border.