STEPS
1) Log in as admin to https://crs-sandbox2.int.aws.folio.org/ as admin user
2) Apps > Setting > Authorization roles
3) Find and select any role with already assigned user > Click it
4) In the Role detailed view pane expand “Assigned users“ > Click “Assign/Unassign” button
5) Find already assigned users/s in the opened modal

ACTUAL RESULT
Already assigned user/s have no checkox, which makes unassign process impossible from this UI point. Check the video
Workaround: Roles can still be unassigned through Apps > Users > Edit user

EXPECTED RESULT
Checkboxes present, and users are highlighted

Additional:
Only for dry run1, snapshot and bugfest envs are fine