Not a smart plug but I have an Athom bulb that has been great for over a year but just this week has started randomly turning on, a lot. It’s running the latest WLED (14.1). In HA the only thing in the log is just ‘light turned on’, because HA didn’t cause it. It’s quite annoying because as far as I can see there is no internal WLED log to see what’s going on.