The "Close All" button in the multitasking pane appears to have been moved up slightly in the new beta.
This new location makes it a LOT easier to hit the button, while I often found myself missing the button and needing multiple attempts to hit it in One UI 5. Obviously this likely depends on the physical shape/size of your phone (I'm on a base S23), but the new size/location of the button has been an unexpected improvement for me personally in terms of usability.
