On phones, the North Star line was being squeezed into a narrow column by its own label and the practice chip — two or three words per line. The label now shrinks to its ✦ star and the chip tucks under the sentence, giving your words the full width.
After typing, iOS sometimes kept the bottom nav floating above a dead black band. The app now forces the viewport to re-settle the moment the keyboard leaves, wherever you are on the page.