Grub2 missing from Leap 15.6 and 15.5 s390x iso image

Trying to fresh install Leap 15.6 s390x architecture from iso image at download.opensuse.org. When selecting a “server” package and removing the security structure (e.g. no SELinux or AppArmor), the installation stalls with “need to install grub2”. Had same issue with iso for Leap 15.5.

FYI, did an install without grub2 and it wouldn’t boot, so came up with a rescue kernel, mounted the filesystems, chroot’d to that environment and manually installed grub2 and grub2-emu packages with direct rpm command. Ran yast to do the boot loader (it then built the grub2 and zipl (s390x only bootup) entries, but grub menu at reboot was empty so couldn’t choose anything to get started.

Base question is whether missing grub2 packages from the iso images is an oversight or not in these iso builds. Also, any suggestions for other ways to get around this.