2.3 "Console Already in Use" Warning Does Not Display When Expected (Bug ID 12364760)

When you open a second console on a given desktop, a warning used to state, "Console Already in Use". This message does not appear when expected. For instance, assuming you have created a VirtualBox desktop provider and a pool, and imported and cloned a desktop, then when you take the kiosk session of a desktop and launch that desktop's console from the Admin GUI, you see the ctrl+alt+del screen, but the warning is not displayed.