2794472 - Kernel Upgrade - Can't exit out of logon screen - Function Code cannot be selected

After kernel patch update/upgrade, you cannot exit the logon screen by clicking the close button.

Error "Function Code cannot be selected" is raised.

Kernel 721 sp1217

Kernel 722 sp813

Kernel 749 sp711

Kernel 753 sp418

Kernel 773 sp123

KBA , BC-ABA-SC , Dynpro and CUA engine , Problem

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