Event homeassistant_started doesn't work

Configuration
15

Please use code tags in your posts.
I log my Home Assistant starts with an automation. Maybe this might help you:

- id: '1729005744617'
  alias: Log Home Assistant Start
  description: Logs every HA start to www/home_assistant_log.txt
  triggers:
  - trigger: homeassistant
    event: start
  conditions: []
  actions:
  - action: shell_command.log_home_assistant_start
    metadata: {}
    data: {}
  mode: single