attach/detach issue

[volcoma]

Hi, after your recent changes i now get an assert in the broadphase destructor event without creating any physics objects.
I am basically doing attach/detach

broadphase::~broadphase() {
    m_connections.clear();

    // This class creates all contact manifolds thus destroy them all.
    auto manifold_view = m_registry->view<contact_manifold>();
    m_registry->destroy(manifold_view.begin(), manifold_view.end());  <---  asserts here

    m_registry->clear<tree_resident>();
}

[volcoma]

also i dont know if it is intended but this code is duplicated in edyn::detach

           // All manifolds are created by the engine thus destroy all entities.
    auto manifold_view = registry.view<contact_manifold>();
    registry.destroy(manifold_view.begin(), manifold_view.end());

[volcoma]

here is a screenshot of the backtrace. Looks like its coming from the stepper_async destructor calling broadphase destructor

[volcoma]

Seems to me its somehow related to the order of destruction in the simulation_worker's destructor

Manually erasing them seems to fix the crash, but i don't know why

simulation_worker::~simulation_worker() {
    stop();
    m_registry.ctx().erase<contact_manifold_map>();
    m_registry.ctx().erase<broadphase>();
    m_registry.ctx().erase<narrowphase>();
    m_registry.ctx().erase<entity_graph>();
    m_registry.ctx().erase<edyn::settings>();
    m_registry.ctx().erase<registry_operation_context>();
    m_registry.ctx().erase<material_mix_table>();