I've just upgrade my machines to use TV13. However, when trying to connect to a machine with Windows Server from Ubuntu, there's no option to send a Ctrl+Alt+Del combo. In previous versions, there was a tray with icons and you could select the Ctrl+Alt+Del combo and it would forward it to the host, but that appears to be missing now. Pressing the combo from the Ubuntu machine doesn't forward the keystrokes to the TeamViewer window and instead just closes the window.
Any help would be appreciated.