Recent issue with /dev/disk/by-uuid

After a recent dist-upgrade, I failed to mount /boot when rebooting.
Further investigation shows that /dev/disk/by-path has an entry for my
/boot as /dev/sda (rather than sda1).  Updating to use the by-id in
/etc/fstab solves the problem, but I'm curious what changed and if
this is a known issue.  I would guess that this is an issue with
changes in either udev or the kernel.

The partition table is a Sun disk label, which means that /dev/sda1
starts at sector 0 and the filesystem header thus starts in the same
place as if there were no partition table.  I believe on my e450 that
this is in fact required for the boot partition, so I don't know that
there's an easy fix in the installer aside from defaulting to one of
the by-id options.

Copy/paste of relevant information below:
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root@alexandria:~# grep boot /etc/fstab
# /boot was on /dev/sda1 during installation
#UUID=e952f794-4d8e-4bba-8c5a-851acdb5e886 /boot           ext2
defaults        0       2
/dev/disk/by-id/wwn-0x5005076506c6bd8a-part1 /boot ext2 defaults 0 2
root@alexandria:~# ls -l /dev/disk/by-uuid/
total 0
lrwxrwxrwx 1 root root 10 Oct 27 18:26
6194b363-9f57-401b-a3cb-ee4bc8895323 -> ../../sda2
lrwxrwxrwx 1 root root 10 Oct 27 18:26
704f946c-b8e8-4a00-9d18-c49b325cd7e3 -> ../../sda4
lrwxrwxrwx 1 root root  9 Oct 27 18:26
e952f794-4d8e-4bba-8c5a-851acdb5e886 -> ../../sda
root@alexandria:~# blkid
/dev/sda4: UUID="704f946c-b8e8-4a00-9d18-c49b325cd7e3" TYPE="swap"
/dev/sda2: UUID="6194b363-9f57-401b-a3cb-ee4bc8895323"
BLOCK_SIZE="4096" TYPE="ext4"
/dev/sda3: UUID="e952f794-4d8e-4bba-8c5a-851acdb5e886"
BLOCK_SIZE="1024" TYPE="ext2" PTTYPE="sun"
/dev/sda1: UUID="e952f794-4d8e-4bba-8c5a-851acdb5e886"
BLOCK_SIZE="1024" TYPE="ext2" PTTYPE="sun"
root@alexandria:~# parted /dev/sda p
Model: IBM DDYST1835SUN18G (scsi)
Disk /dev/sda: 18.1GB
Sector size (logical/physical): 512B/512B
Partition Table: sun
Disk Flags:

Number  Start   End     Size    File system     Flags
 1      0.00B   512MB   512MB   ext2            boot
 2      512MB   17.1GB  16.6GB  ext4
 4      17.1GB  18.1GB  1025MB  linux-swap(v1)

root@alexandria:~#
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