ZFS_INITRD_ADDITIONAL_DATASETS does not work

[Thermi]

zfs-utils 0.8.4, set ZFS_INITRD_ADDITIONAL_DATASETS is not honored by the initcpio/initrd script.

In my case, it is set as ZFS_INITRD_ADDITIONAL_DATASETS="bpool/BOOT/arch rpool/home/root rpool/opt rpool/srv rpool/usr rpool/usr/local rpool/var rpool/var/cache rpool/var/games rpool/var/lib rpool/var/lib/AccountsService rpool/var/lib/docker rpool/var/lib/nfs rpool/var/log rpool/var/snap rpool/var/spool rpool/var/www" in /etc/default/zfs on Arch, but none of the listed FS are mounted.