hoisted property

Whether the shell has taken this route's chrome.

False while the bar still draws it, and true once the shell has both accepted the registration and had a frame to render its copy. It goes false again for as long as a dialog or a modal sheet is presented over the route: the shell draws above the Navigator and cannot get beneath one, so the bar takes its chrome back and the presentation covers it. leading and actions already account for all of this — read it only to substitute your own chrome for the package's.