[FIX] mail: escape author name in messaging menu

addons/mail/static/src/js/systray.js

@@ -111,9 +111,7 @@ var MessagingMenu = Widget.extend({
 
             // Generate last message preview (inline message body and compute date to display)
             _.each(channels_preview, function (channel) {
-                channel.last_message_preview =
-                    channel.last_message.displayed_author + ': ' +
-                    chat_manager.get_message_body_preview(channel.last_message.body);
+                channel.last_message_preview = chat_manager.get_message_body_preview(channel.last_message.body);
                 if (channel.last_message.date.isSame(new Date(), 'd')) {  // today
                     channel.last_message_date = channel.last_message.date.format('LT');
                 } else {

addons/mail/static/src/xml/systray.xml

@@ -45,6 +45,7 @@
                         <span class="o_last_message_date"> <t t-esc="channel.last_message_date"/> </span>
                     </div>
                     <div class="o_last_message_preview">
+                        <t t-esc="channel.last_message.displayed_author"/>:
                         <t t-raw="channel.last_message_preview"/>
                     </div>
                 </div>