Comment # 26 on bug 1226122 from Mario Guzman

It is for sure the missing the missing suse-module-tools-scriptlets. I tested
back on the first machine. I also adding a mount for /boot/efi to the efi
partition. It made no difference. So boot manager not managed prevents the
scriptets from being installed. On both systems I manually checked
suse-module-tools-scriptlets during install and it added many more programs.
Both now boot fine.

So this is a problem with the installer when boot not managed is selected.