Solution : https://service.sap.com/sap/support/notes/989286 (SAP Service marketplace login required)
Key words :
symptom calling web dynpro applications, called web dynpro application, web dynpro java, web dynpro abap, web dynpro application, cross-session techniques, web dynpro, sapgui application, html control, work correctly
Related Notes :
1098009 | Web Dynpro ABAP - List of known Restrictions and Browser Support |