hi,team:

    my dag is 1 minute schedule,one parts dag state is success,but tasks state is not yet started in a dag:

![image](https://user-images.githubusercontent.com/41068725/116344664-357d8780-a819-11eb-8010-c746ffdfdbcc.png)


   how can to fix it?
tests/www/test_app.py
from flask import request
            
            assert request.remote_addr == '192.168.0.1'
            
            assert request.url == "http://invalid:9000/internal-client/debug"
            return Response("success")
        app.view_functions['debug'] = debug_view
        new_environ = {
            "PATH_INFO": "/internal-client/debug",
            "REMOTE_ADDR": "192.168.0.1",
            "HTTP_HOST": "invalid:9000",
        }
        environ = create_environ(environ_overrides=new_environ)
        response = Response.from_app(app, environ)
        assert b"success" == response.get_data()
        assert response.status_code == 200
    @conf_vars(
        {
            ('webserver', 'base_url'): 'http://localhost:8080/internal-client',
            ('webserver', 'enable_proxy_fix'): 'True',
            ('webserver', 'proxy_fix_x_for'): '1',
            ('webserver', 'proxy_fix_x_proto'): '1',
            ('webserver', 'proxy_fix_x_host'): '1',
            ('webserver', 'proxy_fix_x_port'): '1',
            ('webserver', 'proxy_fix_x_prefix'): '1',
        }
    )
    @dont_initialize_flask_app_submodules
    def test_should_respect_base_url_and_proxy_when_proxy_fix_and_base_url_is_set_up(self):