Most likely a calibration issue (Software).Is this software or hardware related?
Apple is using an algorithm to perform palm rejection so you can hold the phone without triggering accidental touches on the edges. This is even more important on 16 Pro-series because of the thin bezels.
Apparently they didn't use the phone themselves before releasing it to the public. The algorithm is way off.
This is also why thinner bezels is not necessarily better in every way. It looks nicer, but usability is more important imho.