The second bug ( its actually two more bugs ), are related to ghostly champions, one of them has no influence on gameplay, but it looks horrible visually. Ghostly overloads the natural translvl of the unit, this is not an issue if the unit is opaque, however the combination of Ghostly + any unit with transparency ( like ghosts or willowisps ) will mess up alpha blending, resulting in a unit with black outlines. This mess is of course fixed. The third bug, also related to ghostly champions, the init code overwrites their physical resistance without taking into account their base resistance may be higher, which again leads to things like Wraith's that in vanilla should be physically immune to actually have less resistance then without the modifier.
With that out of the way, Ghostly champions are now regarded as ethereal by the game, (refer to the ethereal plane post for more information about that) rather then physically resilient.
The second major change is a new subtype of champion (alongside Champion, Possessed, Berserked, Fanatic and Ghostly):
![Image](http://img26.imageshack.us/img26/6100/screenshot1004080752130.png)
These units have an elemental affinity with fire (not resistance), they have a constantly active blaze trail and an appropriate color, they were designed mostly as the opposit of the Ghostly champions.