Do not invalidate the sorts after receiving the particles after the ghost.

src/runner.c

@@ -1918,9 +1918,9 @@ void *runner_main(void *data) {
           } else if (t->subtype == task_subtype_xv) {
             runner_do_recv_part(r, ci, 1, 1);
           } else if (t->subtype == task_subtype_rho) {
-            runner_do_recv_part(r, ci, 1, 1);
+            runner_do_recv_part(r, ci, 0, 1);
           } else if (t->subtype == task_subtype_gradient) {
-            runner_do_recv_part(r, ci, 1, 1);
+            runner_do_recv_part(r, ci, 0, 1);
           } else if (t->subtype == task_subtype_gpart) {
             runner_do_recv_gpart(r, ci, 1);
           } else if (t->subtype == task_subtype_spart) {