Screenshots taken within Simulator 10 now mask out the curved corners and "notch" with transparency, at least on the XS Max simulator.
This creates an issue because App Store Connect rejects any screenshots with transparency.
This creates problems because either part of the screenshot is lost behind the "notch" if one adds a black background to the PNG, or the only way to upload full screenshots is by taking them from a real XS Max (not an option for many developers because the price is so high).