Comment # 6 on bug 1177009 from Neil Rickert

Thank you for that suggestion.

So grub2-i386-efi version 2.04-lp152.7.15.1 is broken.  But everything works
correctly with version 2.04-lp152.7.12.1

My tests:
I downgraded all grub2 to the version in the main repo.  I then ran
grub2-install (this is not automatic for i386-efi).  On reboot, all kernels
work.

I then upgrade again to the latest version, but I did not run "grub2-install". 
Again, everything worked.  Then I ran "grub2-install", and after that I could
not boot any of the leap kernels, so I booted to kernel 5.8.11.

Finally, I downgraded only grub2-i386-efi to version 2.04-lp152.7.12.1, and ran
"grub2-install".  And everything works correctly (all kernels boot).