When a button that has an onAction method assigned, the onAction method is fired when the mouse button is released whilst the mouse pointer is over/on the button, some onMouseUp event I guess, but when a onAction is assigned to a label or image without the showClicked property checked the onAction method always get fired.
I would nice if an element on a window that has an onAction behaves the same as a button and only fires the method only when the mouse pointer is over/on the element and on a mouse up event.
Regards,
Peter