I just got off the phone with the follow up call from Apple. They wanted to confirm the problems I, and many others have been having, along with the temporary workarounds (Tapback and tin foil, along with no case or no protector). He asked about MacRumors and I confirmed a story had been posted and most , if not all mini users affected. I was told that Engineering is aware of the problem and did not need any additional data from me. I was told in no uncertain terms, that engineering believes that the problem can be fixed with a update. I was also told that if Apple finds out that there is indeed a hardware problem that would require a recall, they will go back to your Case ID to verify eligibility. I asked if it is believed that an update will happen before the return window closes on 1.8.21 and he couldn’t say. He just said make sure to keep your software up to date.
Make sure to call Apple and get a Case ID, in case it does end up being hardware as well.