Comment # 18 on bug 1161823 from S. B.

(In reply to Michael Chang from comment #17)
> (In reply to andy great from comment #16)
> > @Michael Chang
> > You mention that only got disabled for i386-pc, but this bug was on x86, I
> > was trying to installed it on x86. So why it happen?
> 
> Are you testing on efi ? It shouldn't happen at all for efi. For legacy
> bios, grub runs in 32bit protected mode even on 64-bit processor.

Thanks for this explanation, I was also confused by the i386 terminology and
assumed that the openSUSE patch to disable Zstd was only for 32-bit Tumbleweed
installations.

The workaround that I found for this limitation is to enable Zstd compression
and run:
sudo chattr -R -c +m /boot