Privacy switches not persistent

[yawnoc]

I have noticed that if I enable the privacy switches for microphone (Pine + F10) or camera (Pine + F12) and leave them for 2 weeks or so, they lose their state and revert to being disabled. Does this mean I have buggy keyboard firmware flash memory?

Also I have noticed the following:

1. Activation/deactivation happens instantly rather than 3 seconds after pressing the required key combinations
   
2. When the camera (Pine + F12) privacy switch is enabled, there is a high-pitch whining sound (not from the speakers; maybe a stray capacitance thing?)
   

Anyone else experience these?

This is on a Pinebook Pro ordered in Nov 2019 and delivered Jan 2020.

(Haven't yet tested the Wi-Fi privacy switch --- too scared I'll run into trouble trying to reactivate internet.)