It's possible this is intended behavior and I missed this in the release notes. I don't see any UI elements that allow a user to flag a person or a project.
Steps to reproduce:
- Navigate to a user account
- Try to find the "Flag for Later" link in the menu
phabricator phabricator 16a584ac7e3a74d7072d1a1028165514b413c3d5 (Mon, Mar 7)
arcanist ccbaee585e1a350d1ff970c30481079dc8471a7c (Mon, Mar 7)
phutil 62f63fc614a15e05664b64ebe8c1ccd43e71a99d (Mon, Mar 7)