After OS upgrade from Catalina to Monterey - iMac restarts by itself after shut down
I am using iMac 2020. Just upgraded to Monterey 12.2.1 from Catalina and it was running stable so far through out the whole day. When I shut down the iMac after finishing all the works, it took sometime to shut down with the USB device light off. After 10 to15 seconds, iMac restarted by itself and then showed a system crash screen saying "Your computer was restarted because of a problem". After a while, it restarted and entered into desktop screen with a dialog box "Your computer was restarted because of a problem". I clicked "Ignore" (because I have sent the same report many times), it was working normal. The problem is, I want to shut down the machine but it always restarts by itself after shut down. Unless I switch off the mains power.
This is a wonderful experience which I don't have before in using so many versions of MacOS. May be Monterey requires the user to switch off the mains power, otherwise it will wake up in order remind you.
Any assistance or advice is much appreciated!
Thanks!
iMac Line (2012 and Later)