By default, policy.allow-public is set to false. Based on what I'm seeing [[ https://github.com/phacility/phabricator/blob/cf83db15d6bae88770291307bc1cdb4ea6200cf8/src/applications/people/controller/PhabricatorPeopleProfileEditController.php | here ]], the value for $note would be null when it's passed to the view on line 87, resulting in this stack trace: {F669874}
Steps to reproduce:
# Set policy.allow-public to false (as it is out of the box)
# Attempt to edit your profile
Assigned this to the author of the offending commit. Apologies if that's against protocol.