Merge pull request #5789 from nextcloud-libraries/backport/5632/next

[next] fix(NcAppNavigationItem): Fix popper boundary element

Author: Antreesy

src/components/NcAppNavigationItem/NcAppNavigationItem.vue

@@ -627,6 +627,7 @@ export default {
 
 	data() {
 		return {
+			actionsBoundariesElement: undefined,
 			editingValue: '',
 			opened: this.open, // Collapsible state
 			editingActive: false,
@@ -660,9 +661,6 @@ export default {
 		undoButtonAriaLabel() {
 			return t('Undo changes')
 		},
-		actionsBoundariesElement() {
-			return document.querySelector('#content-vue') || undefined
-		},
 	},
 
 	watch: {
@@ -671,6 +669,10 @@ export default {
 		},
 	},
 
+	mounted() {
+		this.actionsBoundariesElement = document.querySelector('#content-vue') || undefined
+	},
+
 	methods: {
 		// sync opened menu state with prop
 		onMenuToggle(state) {