Warning about installing DragonFly and FreeBSD to same disk

[Eugene]

Chris Pressey wrote:

Because DragonFly and FreeBSD have the same partition id (165,)
FreeBSD's installer will see the DragonFly partition as a FreeBSD slice.
And, *even if you don't set up any BSD partitions on the DragonFly
partition*, the installer will erase the DragonFly partition's
disklabel.
 

Could You tell, what was the version of FreeBSD, which caused such a 
problem, and if this problem occur rather often or always for that 
version? 

The fact is that I've installed FreeBSD 4.9 on a drive with DragonFly 
1.2 and boot them with DragonFly bootloader with no extra manipulations.