Aqara Switch is off but with some voltage output

Hi!

I’ve two Aqara Switch wall (version with no zero line) that when the switch it’s off, the voltage output is about 30 Volts and every 10-15 seconds about 60 Volts so the connected bulb flickers.

Is it this performance normal in this switches? What other options are there? Because I love its esthetic but in my opinion this behavior shouldn’t happen.

Thanks.