MacOS Big Sur has arrived and it has a new style for table views. This new style makes rows taller and also adds some space to each row, insetting them. While you may like your app to adopt this look for most of your tables, it is possible that some tables look odd when insetted. There is a new style attribute you can apply both in IB and in code, which by default is set to automatic.
This release improves compatibility with macOS Big Sur & Apple Silicon, fixes some minor issues and adds more decimals to percentage related fields. It also features a new icon designed to better fit in Big Sur and a future iOS release: This release adopts some of the new Big Sur looks, such as full height sidebar with the new system symbols (available only when running on Big Sur). The toolbar icons are unchanged for now and will be replaced with symbols in a future release, as well as using a custom accent color for the sidebar items.