Solution : https://service.sap.com/sap/support/notes/901097 (SAP Service marketplace login required)
Key words : 
slow-moving item reason, query displays additional rows, display empty values, 0b support package 28, terms query, 10 support package 22, 5 support package 14, behaves correctly, prerequisites, note 850840
Related Notes : 
       
| 944815 | Problems with 'Constant selection' (english version) | 
| 872275 | SAPBWNews BW Support Package 16 NW'04 Stack 16 RIN | 
| 872273 | SAPBWNews BW 3.1 Content Support Package 24 | 
| 872271 | SAPBWNews BW 3.0B Support Package 30 | 
| 850840 | Constant selection and missing/too many output lines | 
| 834996 | Probleme mit der Eigenschaft 'Konstante Selektion' |