PSA: Node-RED 18 update may break Home Assistant flows

This is an automated archive made by the Lemmit Bot.

The original was posted on /r/homeassistant by /u/Incromulent on 2024-06-23 01:11:00+00:00.

I recently updated to the v18.0.0 Node-RED add-on and experienced widespread failures in my flow automations. After about 10 minutes of troubleshooting, I opted to restore from backup to get the lights working ASAP.

While I confirmed the breakdown of all zha_event listeners, the full extent of the update's impact on other HA connections remains unclear.