i think you are confusing people because the term “Tesla Wall Charger” refers to the hardwired charger you buy separately. The plug in charger (neither of which is a charger, BTW, the charger is in the car) is called the Universal Mobile Connector or the UMC. I take it that’s what you’re using.
and that’s fine. I’ve used mine over two years on a NEMA 14-50 plug without issue. So it’s a proper use case. Agree with the others. As someone who was a home builder for years.......stuff happens. And trades are not infallible, nor are home inspectors. Get a good electrician out. I would discontinue use until then.
Thats what I was thinking too, but there are wall connectors with pigtails as well, and you cant "hardwire" the mobile connector, so its also possible that the OP has a wall connector with a pigtail on it, which is what they said. They also said the issue happens "with my wall and portable charger at the new home", so I think there actually is a wall connector with a pigtail on it being used in this case.