
I have a body that doesn't move (infinite mass and inertia, and doesn't belong to a space) connected to a body which represents a crate. The crate is directly below the body, which is positioned at 0,0. I disabled gravity so that forces wont affect anything in this test. Now, I find as long as the angle of the crate is 0, no matter where the crate connects, the engine will handle it correctly. But, if I make the angle of the crate the radian equiv of 180 degrees, the crate springs up to the top. Here is a screenshot:

Is this normal, has anyone else had this happen or am I doing something fundamentally wrong ?