Same here... on m1... After updating to Monterey power over usb-c from monitor (Philips 279P) stop working... in fact after booting I have to disconnect and reconnect the monitor cause it's not even recognized as external monitor... but no PD... Another similar issue I founded it that the plugged wired headphones are not recognized. Sound coming out from macbook pro speakers even if the headphones are connected after reboot. I have to disconnect them and connect them again to make them work (same as the monitor)