Temperature Controls Back Lit?

I have an early '17 (66) Ibiza, I noticed today that the air con control knobs (fan speed, temperature etc) did not light up when it is dark with the headlights on.

I am not sure if there is a fuse that has gone, but I cannot for the life of me remember if they ever did illuminate in the first place

I have a picture for reference but it will not let me post it, similar can be found if you search google images for '17 ibiza dash', it is the first picture, the dials under the touch screen.

Does anyone have a similar model and would be able to confirm the illumination?

It's working! It does indeed light up as you suggest. I checked the fuse and it seemed fine, popped it back in and gave them all a wiggle, put the ignition on and they lit up!