@Wayne-TP In addition I've noticed that now when someone presses the doorbell, I'm getting a notification to say: 'Switched to battery powering' followed by another notification seconds later saying:...

Hi @Wayne-TP I'm afraid this solution doesn't resolve the issue. I installed a hardwired Tapo D235 camera (firmware version 1.1.19) a few weeks ago to my house, so it has a hardwired power source...