On my personal desktop Win10, I have Brave. It said it was managed by your organization, so I followed the advice to use brave://flags to disable #show-managed-ui. That worked. BUT, now it is back and that flag is not found in brave://flags.
I have tried the downloaded policy remover and looked for recommended policy keys in the Registry, all to no avail.
UPDATE: Added a new person and found that the manage setting was the same for that new person.
Please advise how to find out what is causing it and how to make it stop.