Bumping an old thread.
It looks like domoticz is detecting two device types with the same unit ID - blinds and lights.
V_PERCENTAGE values send from the device to domoticz updates the Light/Switch value. It also works the other way around - changing the light type device to dimmer and updating the dim value - sends V_PERCENTAGE command to mySensors which effectively targets the cover (as they have the same unit ID).
