In Project Assistant in the latest Cubase (12.0.60.453) on Mac Ventura 13.2.1 you can’t simply arrow key to your preferred template or project and press Enter. Instead you have to click on the Open or Create Empty… button. Previous versions always let you do this.
And that it another regression in C12… It is really hard to understand how the development team finds time to re-make a dialog that was perfectly fine and make it worse, but there are still several dialog windows from SX days which are in dire need of an overhaul (Preferences, Macros…).