Hi. I installed this system from Manjaro 16.08 Xfce Pre5 with Calamares installer. I made partitions: GPT /boot 1074MB EXT3 / 255GB XFS on LUKS System ask passphrase before Grub, but it boot up even if I typed nonsensical or empty passphrase. LUKS device exists on /dev/mapper. Really LUKS passphrase is used?