Nemesis#13, I don’t think he’s talking about physics at all.
Currently, the CollisionBox is only supported as a from solid when colliding with a collision sphere. The problem is usually that the mathematics for box<>solid intersections aren’t existent or are difficult to compute. In general, a sphere is the most universally supported and fastest collision solid.
That really depends on what you need it for. For instance, it’s currently more difficult/expensive to get collision information back from Bullet, since there is no analog to a CollisionHandlerQueue.
Also, let me clear up that although Panda’s collision systems and physics systems are compatible, they are separate subsystems.
That is unrelated to what the OP asked, though, which is whether the box can be used as “from” object. The answer is yes, but only when colliding with sphere.