RT-AC68U: LED ON/OFF Problem...?

On the back of the router, there is a physical LED ON/OFF switch. I have it currently set to 'OFF' and it works as desired.

I notice that any time I RESET or UPGRADE the firmware of the router, once the router boots up, the LED somehow turns ITSELF back on. I have to press the LED switch once again and it turns itself off.

Is this supposed to happen? Or do I have a defective unit?

Thanks for any insight...