You are not seeing the content that you are expecting to see in the Navigation pane.
This issue can be caused by a corruption of the local cache. There are several methods to refresh the local cache in Remote Desktop Manager.
Press Ctrl+F5 on your keyboard.
Hold the Ctrl key on your keyboard and click on the refresh button in the Quick Access Toolbar.
You can manage the local cache by doing a Vaccum, a Repair or a Delete.Feedback