Dang, you’re right, it’s the same on Winodows (unsurprisingly)… and in C11 it was working fine with TAB and even keyboard shortcuts:
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…).