fix: https://github.com/NodeBB/NodeBB/issues/10242

public/src/client/unread.js

@@ -122,6 +122,8 @@ define('forum/unread', [
 		$('a[href="' + config.relative_path + url + '"].navigation-link i')
 			.toggleClass('unread-count', count > 0)
 			.attr('data-content', count > 99 ? '99+' : count);
+
+		$('#mobile-menu [data-unread-url="' + url + '"]').attr('data-content', count > 99 ? '99+' : count);
 	}
 
 	Unread.initUnreadTopics = function () {

src/middleware/header.js

@@ -183,6 +183,8 @@ async function appendUnreadCounts({ uid, navigation, unreadData, query }) {
 		newTopic: unreadCounts.new || 0,
 		watchedTopic: unreadCounts.watched || 0,
 		unrepliedTopic: unreadCounts.unreplied || 0,
+		mobileUnread: 0,
+		unreadUrl: '/unread',
 		chat: results.unreadChatCount || 0,
 		notification: results.unreadNotificationCount || 0,
 		flags: results.unreadFlagCount || 0,
@@ -200,6 +202,8 @@ async function appendUnreadCounts({ uid, navigation, unreadData, query }) {
 			if (item && item.originalRoute === route) {
 				unreadData[filter] = _.zipObject(tidsByFilter[filter], tidsByFilter[filter].map(() => true));
 				item.content = content;
+				unreadCount.mobileUnread = content;
+				unreadCount.unreadUrl = route;
 				if (unreadCounts[filter] > 0) {
 					item.iconClass += ' unread-count';
 				}