How to lock screen on suspend?

Hi everybody. Is there any news on this issue?

I am experiencing the same behavior reported: screen doesn't lock on resume if I "Suspend" from either the Menu "Suspend" Button or typing in the shell:

sudo systemctl suspend

However it does lock if I suspend my laptop with the power button.

How can I check which command is called when the power button is pressed?
In principle if one could replace the command run when clicking "Suspend" in the menu to the one that is run when clicking on the Power Button the issue would be fixed no?

Can anybody help me with this?

Cheers,
Luca