Hyperion.NG

Hyperion.NG is not working in HA and I have no idea why. Debug log says nothing useful for me.
HW: S912 armbox with CoreElec, tested with stable 9.0.1 and Nightly 9.0

When I press ON/OFF toggle, it turns led off for half a sec and turn it back on immediately.

2019-04-10 21:39:52 DEBUG (MainThread) [homeassistant.components.websocket_api.http.connection.1714676304] Received {‘id’: 18, ‘domain’: ‘light’, ‘service_data’: {‘entity_id’: ‘light.hyperion’}, ‘type’: ‘call_service’, ‘service’: ‘turn_off’}
2019-04-10 21:39:52 DEBUG (MainThread) [homeassistant.core] Bus:Handling <Event call_service[L]: domain=light, service_data=entity_id=light.hyperion, service=turn_off>
2019-04-10 21:39:53 DEBUG (MainThread) [homeassistant.components.websocket_api.http.connection.1714676304] Sending {‘id’: 18, ‘success’: True, ‘result’: None, ‘type’: ‘result’}

Any suggestions where to find the answer? Now I use a BW smart plug, but it is a bit overkill for a led strip.

Still not works in the new version of CoreElec.

Same problem here with alpha 5