Yep I don't have intelliscreenx installed and this happens to me I can press the wifi toggle and it will change to white (on) but when you go back into NC it's grey again. Haven't got a fix either, Installed I have
Ncssettings
Swipeback
Pull to refresh
Bgvideo
Swipeselection
Badge customiser
Emphasize
Location reminders
Weecloseapps