Graphical layout editor: F1 help through Performance Assistant impossible

What causes this issue?

Your personal user setting for displaying F1 help is the "Performance
Assistant". From the graphical Screen Painter, however, it is not
possible - for technical reasons - to display the help text directly in
the Performance Assistant. The required F1 help can only be displayed
when you have completed the graphical Screen Painter or have branched to
another part of the Screen Painter.

System Response

The system uses the setting "in modal window (R/3)" for displaying the
required help text.

How to fix this error?

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.