payload_template for the mqtt.publish action is deprecated. The deprecation warning says
In automations templates are supported natively.
What about outside of automations?
I have a button card like
type: button
tap_action:
action: call-service
service: mqtt.publish
service_data:
topic: <the topic>
payload_template: |
{{
<template code>
}}
That works, but doesn’t when I change payload_template to payload.
Any ideas?