core: Setup failed for hassio: Component failed to initialize

Frequently when restarting Hassio from HA /hassio/system page upon next startup Hass.io menu item is missing and logs contain following:

018-09-24 19:29:32 ERROR (MainThread) [homeassistant.components.hassio.handler] Timeout on /supervisor/ping request
2018-09-24 19:29:32 ERROR (MainThread) [homeassistant.components.hassio] Not connected with Hass.io
2018-09-24 19:29:33 ERROR (MainThread) [homeassistant.setup] Setup failed for hassio: Component failed to initialize.

or in logger debug level:

2018-09-24 13:01:59 INFO (MainThread) [homeassistant.core] Bus:Handling <Event call_service[L]: domain=persistent_notification, service=create, service_data=title=Invalid config, message=The following components and platforms could not be set up:

 - [hassio](https://home-assistant.io/components/hassio/)

Please check your config., notification_id=invalid_config, service_call_id=17d94660d7bc463ea7c2459344158f61>

There is nothing wrong in configuration - config checker says it is valid.

After pulling out wire from Hassio RPi and plugging in the issue is always gone.

HassOS 1.10 + HA 0.78.0