Validation rules after 2023.05 upgrade

We recently did a two hop upgrade of our test SMAX tenant from 2022.05 to 2022.11 to 2023.05.  In doing post upgrade testing of 2023.05, I noticed that there is no longer the option to create a validation rule (e.g. Define field as mandatory) in Before Change --only action rules.  Can anyone confirm that this behavior change was made in either 2022.11 or 2023.05?  It can be done in 2022.05, and I want to verity that this is expected rather than an issue with our upgrade.  I saw this in the Request - Support - Classification - Log phase of the  Request workflow.  

Thanks!

Lyn