Can you double check what plugin it is in particular that's causing the issue since Selection control requires Battle core (which we know works) and Target core (which we haven't tested)?
You can do this by turning both target core and selection control off, seeing if it works then, and then turning target core on, seeing if it works, and then finally selection control.
I suspect the issue is in how the windows have been set up in the scene.
Next maybe try switching the battle scene config with the base battle scene config (it should be in the sample folder under Luna Engine Base) and see if the windows are there. If they are there, chances are that Selection Control displaces the windows off screen. If they're not there, then I would do a window search as specified in the manual to see if the plugin made new windows that replaced the existing window that holds the battle statuses.
