Ok, found the answer here:
http://scn.sap.com/community/it-management/alm/solution-manager/blog/2012/07/11/editabilityvisibility-of-ui-objects-dependent-from-the-user-status
It's changed in SPRO > SAP Solution Manager > Capabilities (Optional) > Change Control Management > Standard Configuration > Change Request Management Framework > Adjust UI objects by User Status