Do a fresh tumbleweed installation and select
xfs as root filesystem.
The installation completes successfully and the system reboot.
After login run:
  update-bootloader --reinit
and reboot. The system still reboots fine.
Login and run again:
  update-bootloader --reinit
Now after reboot before the grub menu appears you
can see the following line printer many times:
  error: ../../grub-core/fs/xfs.c:541:not a correct XFS inode.
This goes on for about a minute and then the boot porcess
continues normally.
Login and run again:
  update-bootloader --reinit
After reboot before the grub menu appears you
will see the previous error line printer many times
but this time for about a couple of minutes and then
the boot process continues normally.
Running again: update-bootloader --reinit
does not seem to extend the delay during which
the error message is printed.

I found this fedora bug report that describes the same issue:
  https://bugzilla.redhat.com/show_bug.cgi?id=2254370
and on comment 48 it is said that the following commit:
 
https://github.com/rhboot/grub2/commit/1955d781ba20c1952adc820f3e587878b4f559e1
of grub2 1.12 is causing the issue. To test I have rebuild grub2
removing such commit from the source, I have installed the modified version
of grub2 and run again: update-bootloader --reinit
Now the system boots again without showing the error.