ScrollPane steals MouseClicked from parent

I have called setOnMouseClicked on a parent component that has several child components. Some of the children also handle MouseClicked events. When I click on the component and the click is not over one of the children that handle Mouse Clicked then the parent's event handler is called - unless I put the children in a ScrollPane. When I do that the children respond to mouse clicks as they always did, but if I click inside an "empty" area of the ScrollPane the event handler for the parent is not called.