i have a rigidbody with a distance joint2d and a collider2d, the connected rigidbody of the joint is None, just connect to the space,
but the func “OnCollision2D” not be called,until i check the “enable collision” in the joint component.
is it normal?
so it is that the two connected rigidbody will ignore collision from each other，and if connected rigidbody is None, all collision will be ignored.