Odd thing happening.

Zap! You're sterile! :(

Breathe deeply. You’ll live forever. Glow in the dark. Be the marvel of your community.

Take your pick of these Microwave Leakage Detectors:

https://www.amazon.com/s?k=microwave+detector&i=tools&ref=nb_sb_noss_2

See if your microwave is leaking any hazardous levels.

Probably enough RF leakage to mess with its circuitry.

Would not surprise me. We have an Amazon smart plug that loses it's wifi connection when the microwave is on and my laptop looses it's internet connection as well. They all operate on the same (or close to) frequency so the microwave must leak enough to disrupt the signal. Maybe your light is interpreting the wave as movement.

bob213 wrote:
Would not surprise me. We have an Amazon smart plug that loses it's wifi connection when the microwave is on and my laptop looses it's internet connection as well. They all operate on the same (or close to) frequency so the microwave must leak enough to disrupt the signal. Maybe your light is interpreting the wave as movement.

It may be possible to stop your interference:

If your WiFi router and laptop can operate on the 5 GHz WiFi band instead of the common (and often default band when you get them) 2.4 GHz WiFi band ... then switch your router and laptop over to the 5 GHz WiFi band.

The 2.4 GHz WiFi band is used by a lot of inhome WiFi "gadgets", so get off this band as much as you can for any and all WiFi equipment in your home - if your equipment and router are new enough to have 5 GHz capability.

could it be its just feeling the vibration of the microwave?

Wear a baseball cap lined with aluminum foil, you'll be fine. :)

PIR detectors will trigger in the presence of RF, and all microwaves leak a little. We used to have to lock-out the power in the break room at work to perform tests at the other end of the building.

Could it be sensing the turntable going around? Try turning it off and see what happens.