Solution : https://service.sap.com/sap/support/notes/1787154 (SAP Service marketplace login required)
Key words :
\users\<username>\appdata\local\sap\sap gui\tmp, case calling abap method cl_gui_frontend_services->get_temp_directory delivered, calling abap method cl_gui_frontend_services->get_temp_directory, method abap method cl_gui_frontend_services->environment_get_variable, abap method cl_gui_frontend_services->get_temp_directory, sap gui temp dir, windows temp dir anymore, terms sap gui, windows temp dir, import parameter temp
Related Notes :
| 1442303 | SAP GUI 7.20 - replacement of SAPWORKDIR |