Description of problem:

When using the liveimg kickstart directive to install a TAR image created by Image Builder, Anaconda fails to install it properly.

The first error seen during graphical installation process is error that it could not install the bootloader. Additional errors follow. I created a bug report from the Anaconda interface which includes many logs and debug info. I am attaching kickstart file and blueprint file used to recreate the issue.

Version-Release number of selected component (if applicable):

From Image Build node - latest rhel-8.3

1. rpm -qa |grep -ie osbuild -e composer
   osbuild-ostree-18-3.el8.noarch
   composer-cli-28.14.55-2.el8.x86_64
   python3-osbuild-18-3.el8.noarch
   osbuild-18-3.el8.noarch
   osbuild-selinux-18-3.el8.noarch
   cockpit-composer-22.1-1.el8.noarch
   osbuild-composer-worker-20.1-1.el8.x86_64
   osbuild-composer-20.1-1.el8.x86_64

Used boot DVD ISO image for 8.3

How reproducible:

Steps to Reproduce:
1. Create a minimal rhel-8.3 TAR image using the latest osbuild and the attached blueprint.
2. Serve the attached kickstart file and TAR image from a web server. Adjust the kickstart file to point the liveimg directive to use the TAR image on the webserver.
3. Use rhel-8.3 boot iso to boot a VM on libvirt hypervisor, passing boot options to use kickstart file from the webserver.

Actual results:
Fails to install the TAR as a system that will boot. Anaconda reports errors.

Expected results:
The VM should reboot successfully as a nice, clean, shiny RHEL 8.3 minimal install.

Additional info: