Use the original code for convex-plane collision in (btConvexPlaneCollisionAlgorithm),

rather than the perturbed rotated version (it is slower and harder to debug)

src/BulletCollision/CollisionShapes/btPolyhedralConvexShape.cpp

@@ -417,10 +417,10 @@ void	btPolyhedralConvexAabbCachingShape::recalcLocalAabb()
 		btVector3 vec(btScalar(0.),btScalar(0.),btScalar(0.));
 		vec[i] = btScalar(1.);
 		btVector3 tmp = localGetSupportingVertex(vec);
-		m_localAabbMax[i] = tmp[i]+m_collisionMargin;
+		m_localAabbMax[i] = tmp[i];
 		vec[i] = btScalar(-1.);
 		tmp = localGetSupportingVertex(vec);
-		m_localAabbMin[i] = tmp[i]-m_collisionMargin;
+		m_localAabbMin[i] = tmp[i];
 	}
 	#endif
 }