If a something is stacked on top of a ghost fireball, when hit, the fireball will clip though ground. Upon reloading the world, the fireball will be in the place in which it was hit. This, I believe, is an issue with client-sever communication. The client thinks the fireball is hit, and the server doesn't.
Comments 3
Is this still a concern in the current Minecraft version 1.6.2 / Launcher version 1.1.3 ? If so, please update the affected versions in order to best aid Mojang ensuring bugs are still valid in the latest releases/pre-releases.
you have seen that in a sethbling video, right? =P