Mesh hides itself

[Mudbill]

This is a very common optimization feature, where the engine will stop to render anything that is out of the view. It seems it thinks the object it out of view when the skeleton is. I have noticed in several games that certain object disappear near the edge of the screen. I'm unsure if this can be changed engine-wise, but as you said, you can add bones around the edges to counter it. It is a bit of a hassle, but I don't really know if anything else can be done.