Blood slaves in combat bug?

[K]

You can turn blood slaves into normal units by mind controlling them. If your blood mages were tossing around Hellbind Heart, and your enemy was doing the same or had its own blood slaves, you can gain blood slave units. (I think Hellbind Heart affects mindless units, but I'll have to do some tests on this).

As a side note, these blood slaves don't seem to have a dousing bonus or powers if given a mind with Gift of Reason, at least in Dom II.