The same is true if your encrypted root partition is on a LVM2 volume group. Then one also has to add "lvm2" by hand to /usr/share/initramfs-tools/scripts/local-top/loopaes and regenerate the initramfs.
This bug is escpecially on new installs where you can in this way happily create unbootable systems. In my case it was the combination of loop-aes/LVM2/RAID which created an unbootable system. -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org