Detection problem

Hello,
I just tested the Sonoff SNZB-06P motion detector and I’m facing a problem. It correctly detects me when I’m in front of the desk.
The problem is that on the other side of the partition my desk is up against are the toilets. Every time someone goes there, the detector senses their presence through the partition. Yet it is properly oriented toward me sitting at the desk. I lowered the sensitivity to the minimum, but nothing helps.

Another problem: when the detector is unplugged Gladys shows it as detecting presence. And this evening, I was indeed sitting at my desk and at sunset my lamp turned on. However, the detector was definitely unplugged.
If you have any ideas, thanks in advance.
Have a good evening everyone.

Good evening @l.dolle
Wouldn’t it be a millimetre sensor? Because yes, these sensors go through walls. I had a lamp with a millimetre sensor built into the toilet with the door closed and as soon as someone passed in the hallway, the light would turn on.
I use Xiaomi RTCGQ01LM sensors without light-level detection (this one)
and the other one that has light-level detection is the Xiaomi RTCGQ11LM — they look very similar. And it works very well.
For the other problem, maybe Gladys kept the last state it saw, i.e. presence, and didn’t react to the power cut to switch back to the no-presence state, worth testing.
Oh yes, there is an issue: this Xiaomi sensor, once it has detected, stays blind for one minute. @pierre-gilles made a video (here) to handle this sensor, that might help you