Not helpful, but I to have the same issue. I thought I'd maybe broken something with the update.
I don't have a solution at present, other than charging wirelessly.... and I'm not too keen on doing a factory reset
Since android 12 my charging has been affected. Slow chargers say, use supported chargers. Make sure the usb isn't damaged and fast charger just charges at about a ¼ of the speed. I've had Samsung repair the usb port but I've still got the same problem. They are coming out again soon.
Not sure if it's a coincidence that my phone has faulted after the firmware update or if anyone else is having the same issue