Calendar Condition State bug

There is an issue when using the visual editor that the state value is not being saved and being left with a null:

condition: not
conditions:
  - condition: state
    entity_id: calendar.holidays_in_united_kingdom
    attribute: description
    state: ""

Using the Edit in YAML option solves the issue:

condition: not
conditions:
  - condition: state
    entity_id: calendar.holidays_in_united_kingdom
    attribute: description
    state: Public holiday