Solution : https://service.sap.com/sap/support/notes/532153 (SAP Service marketplace login required)
Key words : 
-colored icon -> options -> trace -> mode, attached note 50226a - activate, -colored gui icon, experience wrong length, wrong scrollbar              positions, abap shortdumps              withcntl_errors, opti-mization paragraph, wrong scrollbar               positions, abap shortdumps               withcntl_errors, watson errors occur
Related Notes : 
       
| 764480 | SAP WinGUI I18N Trouble Shooting |