Z-wave dimmer won't turn off via automation. Stays 'on', brightness: 10

I have an automation that should be turning off my Homeseer WD-100+ z-wave dimmer. The light physically turns off, but hass reports it as still on with a brightness of 10.

I’m pretty sure my automation couldn’t be to blame here. Seems more likely a problem with the way the dimmer fades out the light from 100% to ‘off’ over about two seconds. If I instead switch the light off via the front end, it reports correctly. Anyone dealt with this before?

action:
    - service: homeassistant.turn_off
      entity_id:
        - light.kitchen_dimmer_level
        - input_boolean.kitchen_motion_activated