[CE] Add User doesn't do anything

Using a community edition cluster I:

• go to Security screen
• click "ADD USER"
• nothing happens

Using "Inspect" I see these API calls:

http://localhost:9000/settings/saslauthdAuth which gets "This http API endpoint is only supported in enterprise edition running on GNU/Linux"

http://localhost:9000/settings/ldap which gets "This http API endpoint requires enterprise edition"

http://localhost:9000/settings/rbac/users?order=asc&pageSize=20&sortBy=id which gets 

{"total":0,"links":{},"skipped":0,"users":[]}