Solution : https://service.sap.com/sap/support/notes/321311 (SAP Service marketplace login required)
Key words :
setting option 'optimal column width', field length reason, sap standard system, list viewer columns, conventional alv list, grid control list, 'display' tab page, column width, delivery list, display variant
Related Notes :
| 367071 | Column width of list not copied |
| 332276 | Collective note: VL10 consulting |
| 210364 | Initial variant is not generated |
| 113411 | Collective note: VL10 |