Solution : https://service.sap.com/sap/support/notes/827986 (SAP Service marketplace login required)
Key words : 
html frames display incorrect pages, rfc vis snc secure connection, registered rfc server, terms disp+work, work process waits, http form fields, client server technology, icm patch collection, patch collection, message server
Related Notes : 
       
| 827872 | Work process waits for registered RFC server | 
| 825036 | Corrupt characters in HTTP form fields | 
| 817854 | RFC using SNC secure connection | 
| 804020 | "duplicate conversation" message in librfc | 
| 795234 | HTML frames display incorrect pages | 
| 698017 | ICM Patch Collection (6.40) | 
| 508300 | ICM Patch Collection (Release 6.20) |