"Align Self" Missing from "Align" in Inspector

Hello, I was pretty sure that there should be an “Align Self” under “Align” in the UIToolkit Inspector, unless it was removed. Does anyone know how to fix this issue, since I can’t find anything about it being removed, or it being added online?

It’s there for me on 2023.2:
9841986--1416126--upload_2024-5-18_11-21-50.png

What version are you on?