Athom plug with tasmota: Cyclic current pulses in standby

I have several athom power plugs with tasmota fw, so far tested this on two of them.

They generate output current pulse every ~30 seconds (will measure later).

It’s low enough to not turn any “bigger” device on (not even a 5W table lamp), but…
apparently it’s enough for LED Christmas lights - they very dimly light up for second or two - every pulse.

Is this normal with power plugs on standby?
I previously had Tuya plugs, but did not use it for low power LEDs…