Solution : https://service.sap.com/sap/support/notes/813535 (SAP Service marketplace login required)
Key words :
sap -> enduser content -> standard portal users ->, user core role store worksets, pct/every_user/general/worksets/, control center user role, standard user role, user core role, portal content catalog, crm user role, 'display' dropdown menu, 'id merge' field
Related Notes :
| 766765 | Central Note-SAP EP 6.0 on Web AS 6.40 Support Release 1 SR1 |