Attribute icon not work

[zanac]

I have a sensor with custom attributes - "data"
- "date"
- "time"
- "event"
- "event_icon"
- "icon"

It seems that "icon" cannot be used in flex-table-card, if i put it in colum the "modify" don't work:
- name: Icon
data: icon
modify: x

[ildar170975]

Check this:

type: custom:flex-table-card
entities:
  include:
    - sun.sun
    - fan.xiaomi_mijia_300_1
    - lock.virtual_front_door_lock
    - media_player.kodi_rpi_1
    - sensor.xiaomi_cg_1
    - sensor.xiaomi_cg_1_co2
    - binary_sensor.iphone_5s_focus
    - input_number.test_number
    - input_boolean.test_boolean
    - input_select.test_value
    - input_text.test_text
columns:
  - name: name
    data: name
  - name: entity_id
    data: entity_id
  - name: state
    data: state
  - name: icon
    data: icon

Which gives this:

Note that icons are displayed only when:
-- defined explicitly in template sensors
-- customized via customize
-- ... probably some other cases

Also have a look at this:

The icon for sun.sun CANNOT be accessed.
No idea why there is such a limitation.
home-assistant/architecture#931