fix: #7424

public/src/modules/chat.js

@@ -55,28 +55,7 @@ define('chat', [
 
 		newMessage = data.self === 0;
 		if (module.modalExists(data.roomId)) {
-			require(['forum/chats/messages'], function (ChatsMessages) {
-				var modal = module.getModal(data.roomId);
-
-				ChatsMessages.appendChatMessage(modal.find('.chat-content'), data.message);
-
-				if (modal.is(':visible')) {
-					taskbar.updateActive(modal.attr('data-uuid'));
-					ChatsMessages.scrollToBottom(modal.find('.chat-content'));
-				} else if (!ajaxify.data.template.chats) {
-					module.toggleNew(modal.attr('data-uuid'), true, true);
-				}
-
-				if (!isSelf && (!modal.is(':visible') || !app.isFocused)) {
-					updateTitleAndPlaySound(data.message.mid, username);
-					taskbar.push('chat', modal.attr('data-uuid'), {
-						title: '[[modules:chat.chatting_with]] ' + (data.roomName || username),
-						touid: data.message.fromUser.uid,
-						roomId: data.roomId,
-						isSelf: false,
-					});
-				}
-			});
+			addMessageToModal(data);
 		} else if (!ajaxify.data.template.chats) {
 			socket.emit('modules.chats.loadRoom', {
 				roomId: data.roomId,
@@ -91,15 +70,44 @@ define('chat', [
 				roomData.silent = true;
 				roomData.uid = app.user.uid;
 				roomData.isSelf = isSelf;
-				module.createModal(roomData, function () {
+				module.createModal(roomData, function (modal) {
 					if (!isSelf) {
 						updateTitleAndPlaySound(data.message.mid, username);
 					}
+					if (!modal) {
+						addMessageToModal(data);
+					}
 				});
 			});
 		}
 	};
 
+	function addMessageToModal(data) {
+		var modal = module.getModal(data.roomId);
+		var username = data.message.fromUser.username;
+		var isSelf = data.self === 1;
+		require(['forum/chats/messages'], function (ChatsMessages) {
+			ChatsMessages.appendChatMessage(modal.find('.chat-content'), data.message);
+
+			if (modal.is(':visible')) {
+				taskbar.updateActive(modal.attr('data-uuid'));
+				ChatsMessages.scrollToBottom(modal.find('.chat-content'));
+			} else if (!ajaxify.data.template.chats) {
+				module.toggleNew(modal.attr('data-uuid'), true, true);
+			}
+
+			if (!isSelf && (!modal.is(':visible') || !app.isFocused)) {
+				updateTitleAndPlaySound(data.message.mid, username);
+				taskbar.push('chat', modal.attr('data-uuid'), {
+					title: '[[modules:chat.chatting_with]] ' + (data.roomName || username),
+					touid: data.message.fromUser.uid,
+					roomId: data.roomId,
+					isSelf: false,
+				});
+			}
+		});
+	}
+
 	function updateTitleAndPlaySound(mid, username) {
 		app.alternatingTitle('[[modules:chat.user_has_messaged_you, ' + username + ']]');
 		require(['sounds'], function (sounds) {
@@ -128,8 +136,12 @@ define('chat', [
 	};
 
 	module.createModal = function (data, callback) {
+		callback = callback || function () {};
 		require(['scrollStop', 'forum/chats', 'forum/chats/messages'], function (scrollStop, Chats, ChatsMessages) {
 			app.parseAndTranslate('chat', data, function (chatModal) {
+				if (module.modalExists(data.roomId)) {
+					return callback(null);
+				}
 				var uuid = utils.generateUUID();
 				var dragged = false;