The attribute is set as required in Classic view however when adding it to the new UX it is not shown as required.
Go to project object
Click on attribute tab
Create new Attribute and Save
Go to Views tab
Click on Fields for Project Properties
Click on Properties for the Attribute created
Mark as Value Required
Go to New UX
Click on Blueprints
Copy Standard Blueprint
Edit new blueprint
Add new attribute created
Expected Result - New attribute will be marked as required
Actual Result - New attribute is not marked as required
This is working as designed.
The new UX does not contain Views like the Classic UI so tconfiguration in the Views will not be shown on the new UX.
All updates needed will have to be in the actual attribute properties.