16.1 b4 14 Pro here. Not sure I have the same issue, but panicking full multiples times a day while not charging. It happens at any moment, could be Face ID unlocking, opening an app, hitting enter with an URL in safari…the panicString property in the ips dump reads “CORE # is the one that panicked. Check the full backtrace for details.”.
Before 16.1 b4 I was on 16.0.2, was also getting occasional full resets but not as frequently. It smells like silicon level soc defect to me. Could be a sign of wrong power condition or something which is making the soc getting worse over charge cycles. Will get genius bar to find out on Friday. I wonder if any of you that are having charging reboot issues could take a look at the panic full analytic dump see what’s written in the panicString. If it also states something to do with core/cpu then I have a feeling that we may be off for a much serious, potentially wider-spread, tsmc 4nm or Foxconn assembly line level of manufacturing defect…