after updating to the latest firmware version of the Xiaomi Chuangmi Wifi Plug v3, the home assistant always detects the switch on.
even if you turn it off from the graphical interface, the home assistant turns it on after a few seconds virtually, even if the switch really remains off.
I am facing the same issue as well. HA always detected the v3 plug as turn on , even if you switched it off
now the switch work