Scrivener 3.3.1 (15588), macOS 13.4.1 (c), German localization. The yellow marked characters don’t work (anymore), but their international counterparts ("d"s and "Y"s) still do:
Following the ?, the Unicode page seems to indicate that this practice is deprecated. And probably the examples shown in Scrivener’s dialog just don’t reflect it. Or I’m stupid. Maybe both.