Why does RHEL 8.7 kickstart installation fails when "--optional" option is used with "@core" package group?

Solution In Progress - Updated -

Issue

  • RHEL 8.7 kickstart installation fails with an error DNF error: Error in POSTIN scriptlet in rpm package tboot, when --optional option is used with @core package group.

    %packages
@core --optional
%end

  • Text Mode Installation:

    Text Mode

  • Graphical Mode Installation:

    Graphical Mode

Environment

  • Red Hat Enterprise Linux 8.7

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