Unable to create direct Blanket PO after 21D patch

Summary:

Create direct Blanket PO using 'Add from Catalog' option at lines does not default Quantity and UOM instead they are left blank and results in error.

Content (required):

When buyer creates a direct blanket PO choosing 'Add from Catalog' option to add blanket lines is not defaulting the quantity and UOM on PO after the line is added and resulting in Error as quantity and UOM required. This is happening only after the 21D patch applied. I tested this in Oracle demo instance (21D) as well same issue over there so I assume it's a global outage.

Oracle please confirm and provide any resolution.