Access Flags in Certification - Not Working

I went through the document for access flags - Working with certifications - SailPoint Identity Security Cloud User Help but the functionality isn’t working as expected.

I have created a new source and launched access recertification for the same. First time when I launched the review, none of the entitlements / access profiles had any flag populated.

Second time when I launched the review for similar population, I expected a + Sign in flag column to denote that the access wasn’t certified previously. But it didn’t happen. Am I missing any config?