This funny thing happened when I was entering the parking structure on the way out of work earlier tonight where the lights on the buttons didn't function as they should have.
There were three other folks in the elevator who witnessed this. They each pressed their respective levels (and I mine) when the doors closed and then suddenly all of the lights on the buttons went out as if we hadn't selected and level. People were taken aback.
So we all selected our floor levels again and then the lights went out again!
However, the elevator stopped at my floor even though the light (no light) was lit - so it appears that it wasn't a malfunctioning of the elevator not able to recognize what floor to stop on - just that only the LIGHTS themselves weren't working correctly!
Was a real interesting situation that happened today.