Solution : https://service.sap.com/sap/support/notes/418639 (SAP Service marketplace login required)
Key words : 
additional key words cor1, 'goods recpt' tab page, status i0074 pdlv, 'delivery completed' indicator, status i0012 dlv, goods receipt, production order, partial quantity, requirement quantity, display mode
Related Notes : 
       
| 424269 | MIGO:Incorrct status Partially delivered/Delivered during GR | 
| 386138 | Incorrect delivery status according to GR posting | 
| 381938 | Incorrct dely status for manufacture of co-products | 
| 125820 | Status in production order during change in qty |