If you modify users/groups in a project's project role and this project uses an issue security scheme, you must remove the role and re-add it to the issue security scheme for the role changes to take effect. Steps to Reproduce: 1. Need to be the admin of a project whose issue creation screen has the security level field and of which you have permission to set issue security level. 2. Create Issue Security Scheme with two levels (Level A and Level B). 3. Add the Administrator role to Level A and the User role to Level B. 4. Assign the Issue Security Scheme to your project. 5. Add yourself to Project A's Administrator Role. 6. Look at the options available under Security Level. You will only see None. Even though you've added yourself to the Administrator role, you won't have the ability to set the issue security to Level A unless you delete and re-add the Administrator role to the Level A security level.