There's no Cancel button in forms for roles administration, like new role form or new policy form.

Steps:

1. Go to Admin > Roles
2. Click Create a Role
   • there's no cancel button
3. Fill Name field
4. Click Create
5. Click Add a new Policy
   • there's no Cancel button as well
6. Choose a type
7. Click Create
8. Click Edit right to new policy
   • there's no Cancel button either

Actual result:

You can't cancel your role changes simply, you have to use breadcrumb.

Expected result:

You can cancel your changes by clicking Cancel button