Disappearing navigation pane

If the navigation pane has disappeared and the Reset Layout button does not seem to fix the issue, here is the solution:

1. Close Remote Desktop Manager.
2. Open your File Explorer and navigate to %localappdata%\Devolutions\RemoteDesktopManager.
3. Delete the RemoteDesktopManager.ext file.
4. Delete all the RemoteDesktopManagerLayout.lyt files.
5. Open Remote Desktop Manager.