Loc and appr leds on fcu

Loc and appr leds on fcu do not light when these modes are selected via key commands. The flightmode annunciators on the PFD show them armed but this is not seen on the buttonleds on the fcu. If the modes are selected by this buttons then the led wil be on. Is there a possibility to correct this? Otherwise a very nice piece of work, thanks for that.