Solution : https://service.sap.com/sap/support/notes/1577719 (SAP Service marketplace login required)
Key words :
original browser window, external window opens, wd java note, external window, wd java >= 7, orginal window, wd abap >= 7, expected behaviour, user closes, link/button
Related Notes :
| 1644847 | External new window should be opened in the foreground |
| 1633968 | External Popup Window from within Flash opens in background |
| 1611888 | Corrections for unified rendering 701/11 I (UR mimes) |