Keyboard resizing and black box issue on iPhone 13 mini with iOS 26

As the keyboard pops up in iOS 26, it does a slight millisecond resize to fit the smaller screen size of iPhone 13 mini, like it’s set for a full size iOS device and not calibrated for the mini’s screen

Also, once on screen, a black box often surrounds the letters of some keys of the on screen keyboard intermittently. Odd. Frequently to letters on the periphery of the keyboard - A S LK\

[Re-Titled by Moderator]

Original Title: Keyboard glitching iOS26