Any flakeyness you see with the button illumination is due to the underlying firmware which actually manages the display. The button illumination parts of that firmware are not used in "the standard product", and are therefore probably not as well tested/engineered as they might otherwise be.

I believe elsewhere Hugo noted that one other side effect of this is that the rotary knob should NOT be used when adjusting the dimmer level, for example.

Not much I can do about it in Hijack, except perhaps re-set the button illumination level periodically --> but doing so causes the buttons to flicker for a second or so, and would probably draw even more complaints.

Cheers