I recently got the XP, and while I do enjoy it, there are still some issues that should be corrected. Maybe listing them is more likely to get them patched, or repaired in the next game.
-Animals still escape with alarming ease, going through fences somehow
-wildebeest occasionally turn transparent. I've had two of them become like ghost wildebeest where you could actually see through them.
-white rhinos are the same size as black rhinos. Even in the little dictionary function it mentions that white rhinos are significantly larger than black rhinos, so why were they made the same size? Also, why are white rhinos not considered endangered? I'm pretty sure that all rhino species are on the protected species lists right now.
-secretary birds take down antelope. I'm not sure why, but I've lost a few antelope to secretary birds, and that isn't right for an animal that hunts small lizards, rodents and insects.
-In general, animals seem to attack each other more. Too much in fact. I keep losing wolves, crocodiles, and surprisingly meerkats because of in-fighting.
-Finally, the game really needs extra large maps. Large maps just aren't big enough.
If you have more glitches that you notice, please add them to the list. Hopefully they'll get the notice of the good people at Blue Fang.