Amend back route from single Nav Menu to Nav Listing

packages/edit-site/src/components/sidebar-navigation-screen/index.js

@@ -33,6 +33,13 @@ import { SidebarNavigationContext } from '../sidebar';
 const { useHistory, useLocation } = unlock( routerPrivateApis );
 
 function getBackPath( params ) {
+	// Navigation Menus are not currently part of a data view.
+	// Therefore when navigating back from a navigation menu
+	// the target path is the navigation listing view.
+	if ( params.path === '/navigation' && params.postId ) {
+		return { path: '/navigation' };
+	}
+
 	// From a data view path we navigate back to root
 	if ( params.path ) {
 		return {};