Solution : https://service.sap.com/sap/support/notes/133585 (SAP Service marketplace login required)
Key words :
choose tools -> abap workbench -> abap editor, enter text 'display long text', additional key words nl10, case-related service entry, indicator 'alternative service text', long text exists, additional text element, alternative service text, select 'text symbols', service text anymore
Related Notes :
| 119281 | IS-H: Current collective note on important errors in 4.02A |
| 101101 | IS-H:Upd.collective note, important errors in 4.01A |