Solution : https://service.sap.com/sap/support/notes/1238399 (SAP Service marketplace login required)
Key words :
sap_basis support package, exact patch number, displayed calendar area, date picker field, calendar area, date picker, kernel patch, support packages, entire calendar, loses focus
Related Notes :
| 563161 | SAP GUI, SAP ITS & SAP IGS patches on Service Marketplace |