I have created a user group for each project and each project has a permission scheme assigned to it. Now, there is a new jira user who needs to have only read access/view-only access to all the projects and issues within them. This new jira user should not be able to create, edit tasks, add comments in the tasks and make any changes in the projects. In the permission scheme I assigned only one permission - Browse projects to the new user to achieve this requirement. But the new jira user is able to create a new tasks in the projects.