Solution : https://service.sap.com/sap/support/notes/1042863 (SAP Service marketplace login required)
Key words :
%appdata%\sap\sap gui\abap editor, transfer automatically generated code hints, sap gui data directory, settings\<user>\sapworkdir\ab4_data, transfer code hints, automatic code completion, terms code completion, enter key reason, entry <codehintagreebyreturn>0</codehintagreebyreturn>, code hints
Related Notes :
| 1506841 | ABAP editor settings get lost during update to 7.20 |
| 1442303 | SAP GUI 7.20 - replacement of SAPWORKDIR |
| 891549 | FAQ of the new ABAP editor as part of SAP GUI |