As of Beta 2 of One UI 4 we are missing a new change in Android 12. This is an animation called a "stretch overscroll" effect. You will see videos of it on stock android 12 where system elements, such as the text in the settings app, stretches as you swipe down on it. The animation is very subtle but gives a very "bouncy" feel to the OS. This feature is absent on One UI 4 and I really hope Samsung is planning on implementing it.