https://github.com/NodeBB/NodeBB/issues/7562

lib/persona.js

@@ -58,24 +58,26 @@ $(document).ready(function() {
 	function setupTaskbar() {
 		$(window).on('filter:taskbar.push', function(ev, data) {
 			data.options.className = 'taskbar-' + data.module;
-
 			if (data.module === 'composer') {
 				data.options.icon = 'fa-commenting-o';
 			} else if (data.module === 'chat') {
-				if (!data.element.length) {
-					createChatIcon(data);
-					$(window).one('action:taskbar.pushed', function(ev, data) {
-						updateChatCount(data.element);
-					});
-
-				} else if (!data.element.hasClass('active')) {
-					updateChatCount(data.element);
+				if (data.element.length && !data.element.hasClass('active')) {
+					increaseChatCount(data.element);
+				}
+			}
+		});
+		$(window).on('action:taskbar.pushed', function(ev, data) {
+			if (data.module === 'chat') {
+				createChatIcon(data);
+				var elData = data.element.data();
+				if (elData && elData.options && !elData.options.isSelf) {
+					increaseChatCount(data.element);
 				}
 			}
 		});
 
 		socket.on('event:chats.markedAsRead', function(data) {
-			$('#taskbar [data-roomId="' + data.roomId + '"]')
+			$('#taskbar [data-roomid="' + data.roomId + '"]')
 				.removeClass('new')
 				.attr('data-content', 0);
 		});
@@ -100,7 +102,7 @@ $(document).ready(function() {
 			});
 		}
 
-		function updateChatCount(el) {
+		function increaseChatCount(el) {
 			var count = (parseInt($(el).attr('data-content'), 10) || 0) + 1;
 			$(el).attr('data-content', count);
 		}