Honeycomb menu: still visible even after show:false

Configuration Frontend
1

Hello,
I would like to ask for some help for the honeycomb menu. I am trying to have only two buttons visible for my windows shutters:

immagine

As you can see, the only way to “hide” the unnecessary buttons is to set “icon: null”, because if I use the supposed value “show: false”, the honeycomb is still visible (with gray background).

Here’s my code:

type: custom:mushroom-template-card
primary: TAPPARELLE
secondary: ''
icon: mdi:window-shutter-cog
fill_container: true
icon_color: ''
tap_action:
  action: call-service
  service: honeycomb
  service_data:
    buttons:
      - show: false
      - icon: null
      - icon: mdi:tray-arrow-down
        color_type: card
        color: red
        styles:
          icon:
            - width: 70%
      - icon: null
      - icon: null
      - icon: mdi:tray-arrow-up
        color_type: card
        color: green
        styles:
          icon:
            - width: 70%
hold_action:
  action: none
double_tap_action:
  action: none

Any idea how to fix this? With the null icon, very thin vertical lines are still visible and I don’t like it too much…

Thanks!