0.42.3 platform: homeassistant event: start broken?

Just updated to 0.42.3 and no longer receive any notifications when homeassistant restarts.

I have updated the code to the new format…

- alias: notify_restart

  trigger:
    platform: homeassistant
    event: start

This worked in 0.42, 0.42.1 & 0.42.3

Anyone else found this to be an issue?

Could this be related to the latest release notes…

Bugfix wait on start event #7013

Cheers,
James

Added github issue (badly :grimacing:)
https://github.com/home-assistant/home-assistant/issues/7058#issuecomment-293406742