bugfix: send displayed marker for the latest message when scrolled down

src/plugins/converse-rai.js

@@ -146,6 +146,16 @@ converse.plugins.add('converse-rai', {
       },
     });
 
+    /**
+     * Send a displayed marker once the chatroom is scrolled down.
+     * FIXME: This is sending two requests (for the same message)
+     */
+    api.listen.on('chatBoxScrolledDown', data => {
+      if (data.chatbox.get('type') === _converse.CHATROOMS_TYPE && api.settings.get('muc_subscribe_to_rai')) {
+        data.chatbox.sendMarkerForLastMessage('displayed', true);
+      }
+    });
+
     /**
      * Triggers an event if a jid has activity.
      *