How to hide projects for unregistered users?

Question

Redmine

Created a non-public project. Added documents to it. Logged out. I can see the project and documents on it. How to fix it. Check mark

public

(public) in the project settings is disabled. I did not find other similar settings.

Answer 1

The problem was that a subproject was created that had this checkbox checked. Therefore, the main project and all its documents were displayed.