Steps to reproduce

This, so far, is affecting Confluence-only Cloud instances.

It's unknown how a user is set to Inactive but it may be a result of a bug or import tasks. To create an inactive user, set a user to inactive in cwd_user table, for example:

update cwd_user set active = 'F' where user_name = 'username_here';

The user will be marked as 'Inactive' in the user management.

Actual Result

A site-admin has no way to reactivate the user.

Expected Result

A site-admin should be able to reactivate the user.

Workaround

Contact Atlassian Support at https://support.atlassian.com to request for reactivation via database.