Lattepanda 3 Delta powering UP on power adapter plugin (usb-c)

Hello,

strange thing happens when connecting my Lattepanda 3 Delta at power adapter on usb-c.

It power ups without pressing the power button.

I know there is an option at BIOS level (acpowerloss-> power-on) to enable such behaviour, but is not my case: it is set to default value power off.

Am I loosing something here?

thank you

regards

ed