render router-link in menu only if current route was matched by router, comment out fallback route

public/js/components/Cis/Menu/Link.js

@@ -9,6 +9,10 @@ export default {
 		}
 	},
 	methods: {
+		isRouterHandled() {
+			let isrouterhandled = this.$route.matched.length > 0;
+			return isrouterhandled;
+		},
 		isCompatLink() {
 			if(this.href === null) {
 				return false;
@@ -20,7 +24,7 @@ export default {
 		}
 	},
 	template: `
-		<router-link v-if="this.isCompatLink()"
+		<router-link v-if="this.isRouterHandled() && this.isCompatLink()"
 			:to="this.calcCompatRouterLink()"
 		>
 			<slot></slot>

public/js/routers/Cis/CisRouter.js

@@ -252,6 +252,9 @@ const router = VueRouter.createRouter({
 			component: FhcDashboard,
 			props: {dashboard: 'CIS'},
 		},
+/*
+ *	TODO(ma0080): 2026-07-06: commented out => check if needed
+ *
 		{
 			path: '/:pathMatch(.*)*',
 			name: 'Fallback',
@@ -266,6 +269,7 @@ const router = VueRouter.createRouter({
 				};
 			},
 		},
+ */
 		{
 			path: `/Cis/Zeitsperren`,
 			name: 'Zeitsperren',