MacBook AIR M3 does not power off

Just got new MacBook AIR with M3 processor. Although performances are overwhelming, there is a culprit that bothers me :

Device can NOT be powered down when connected to charger. All it does is reboots.

When charger is disconnected, powering off is possible.

I'd like to know if this is software / OS issue or a hardware one ?

Running macOS Sequoia.

Thank you in advance.