I can also confirm this bug.
As a workaround the partitions can be created from a live disk before installing, as described here: http://askubuntu.com/questions/55214/how-do-i-correctly-align-partions-on-a-hdd-with-sector-size-of-4096-bytes.
I can also confirm this bug.
As a workaround the partitions can be created from a live disk before installing, as described here: http:// askubuntu. com/questions/ 55214/how- do-i-correctly- align-partions- on-a-hdd- with-sector- size-of- 4096-bytes.