Comment # 16 on bug 1124581 from Michal Hlavac

What I did long time ago was snapper rollback. That's why my first snapshot is
not 1, but 710. I attachned my snapper list output.

Last thing I could say is that yast2 bootloader definitely works after snapper
rollback.

I can provide access to my notebook if it helps. I am not expert to btrfs
subvolumes.