I have a light connected to a Shelly 1 Plus, which most of the time works well. But sometimes, and right now a lot, it's going berserk. The light is switching on and off "by itself". When this is happening I don't hear the relay activating. I do hear the relay activating if I trigger the light manually (via physical switch, via Shelly web interface or via HomeAssistant). It's on the latest non-beta firmware.
Also when the light is switching on/off the status on the Shelly web interface nor on the HomeAssistant changes state, which it normally does.
What should I check?