I was do some testing with older releases, also 7.0.0, and found a workaround: Do not define the usage/mount of a partition before the complete infrastructure is set. First define RAID, LUKS and LVM, and *then* define the usage and filesystem of each partition.
If you define RAID, then already define the /boot partition and continue with LUKS, LVM and the other partitions, then this issue will occur. Regards Matthias
